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Winter Campaign Now On! [Receive a gift of jewels based on your total purchase amount over three days!] 12/5 (Fri) - 12/7 (Sun) Next
December birthstones: turquoise, lapis lazuli, tanzanite, and zircon
KARATZ Books
Custom-made jewelry with stones
July birthstone: Ruby and Sphene

NEWS

2025/12/05

Winter Campaign Now On! [Gorgeous prizes will be awarded based on the total amount spent over the three days!] December 5th (Fri) 0:00 to December 7th (Sun) 23:59

2025/12/04

[Shinjuku Marui Annex 2F] Pop-up store announcement [December 19th (Fri) - 25th (Thu)]

New Arrivals on 12/5 (Fri) & Shinjuku Pop-Up Display Items

Gemstone Identification Guidebook (Not available for purchase separately; gift for purchases of 3,000 yen or more)

Gemstone Identification Guidebook (Not available for purchase separately; gift for purchases of 3,000 yen or more) Sale price¥0
coming soon 【12/7 22時販売】《限定15石》レアストーンガチャ💎ブラジル産パライバトルマリン0.200ct（CuO:0.7%,MnO:4.0%）・シンシャ（鑑別書付き1.487ct）・ターフェアイト0.241ct ほか《複数購入割引有》

【12/7 22時販売】《限定15石》レアストーンガチャ💎ブラジル産パライバトルマリン0.200ct（CuO:0.7%,MnO:4.0%）・シンシャ（鑑別書付き1.487ct）・ターフェアイト0.241ct ほか《複数購入割引有》 Sale price¥6,980
coming soon 【12/7 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン0.142ct・ジンバブエ産ユークレース・1.17ctのコバルトスピネル(鑑別書付：カラーシフト)・ベニトアイトなど《複数購入割引有》

【12/7 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン0.142ct・ジンバブエ産ユークレース・1.17ctのコバルトスピネル(鑑別書付：カラーシフト)・ベニトアイトなど《複数購入割引有》 Sale price¥6,980
[Sale ends 12/5 at 10 PM] December Special Campaign! Limited to 14 stones. December Birthstone: Tanzanite, 1 loose stone (5x7mm, oval cut). Multiple purchase discounts available.

[Sale ends 12/5 at 10 PM] December Special Campaign! Limited to 14 stones. December Birthstone: Tanzanite, 1 loose stone (5x7mm, oval cut). Multiple purchase discounts available. Sale price¥8,800
【12/6 22時販売】《13石限定》さくらインカットやダンデライオンカットを含むスピネルガチャ1石ルース《複数購入割引有》

【12/6 22時販売】《13石限定》さくらインカットやダンデライオンカットを含むスピネルガチャ1石ルース《複数購入割引有》 Sale price¥4,980
Limited to 10 stones: Top-quality Benitoite (2mm, round cut) loose stone. Discounts available for multiple purchases.

Limited to 10 stones: Top-quality Benitoite (2mm, round cut) loose stone. Discounts available for multiple purchases. Sale price¥10,000
【12/6 22時販売】《数量限定》何が届くかお楽しみ！原石＆ルース2石セットガチャ〈レアストーンあり〉《複数購入割引有》　

【12/6 22時販売】《数量限定》何が届くかお楽しみ！原石＆ルース2石セットガチャ〈レアストーンあり〉《複数購入割引有》　 Sale price¥1,680
coming soon [12561466] Andesine Labradorite Moonstone (also known as Rainbow Moonstone) 0.178ct Loose Stone

[12561466] Andesine Labradorite Moonstone (also known as Rainbow Moonstone) 0.178ct Loose Stone Sale price¥9,800
coming soon [12561460] Blue sapphire 0.513ct loose stone

[12561460] Blue sapphire 0.513ct loose stone Sale price¥22,800
coming soon [12561380] Sri Lankan Purple Sapphire 0.393ct Loose

[12561380] Sri Lankan Purple Sapphire 0.393ct Loose Sale price¥22,800
coming soon [12561463] Tanzanite 0.467ct loose stone

[12561463] Tanzanite 0.467ct loose stone Sale price¥9,800
coming soon [12561465] Zoisite 1.312ct Loose Stone

[12561465] Zoisite 1.312ct Loose Stone Sale price¥18,800
coming soon [12561464] Tanzanite 0.436ct loose stone

[12561464] Tanzanite 0.436ct loose stone Sale price¥8,800
coming soon Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture

Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥14,800
coming soon Rainbow Garnet (Andradite Garnet) 1.488ct Loose Stone from Tenkawa Village, Nara Prefecture

Rainbow Garnet (Andradite Garnet) 1.488ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥15,800
coming soon Rainbow Garnet (Andradite Garnet) 0.771ct Loose Stone from Tenkawa Village, Nara Prefecture

Rainbow Garnet (Andradite Garnet) 0.771ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥15,800
coming soon [12561472] Mexican egg-in opal 0.381ct loose stone

[12561472] Mexican egg-in opal 0.381ct loose stone Sale price¥18,800
coming soon [Published on 12561020] Shinsha (Cinnabar) 1.062ct Loose Stone

[Published on 12561020] Shinsha (Cinnabar) 1.062ct Loose Stone Sale price¥18,800
coming soon [12561461] Peridot 0.385ct loose stone

[12561461] Peridot 0.385ct loose stone Sale price¥8,800
coming soon [12561489] Dumortierite in Quartz 16.250ct Loose Stone

[12561489] Dumortierite in Quartz 16.250ct Loose Stone Sale price¥9,800
coming soon [12561453] Yellow sapphire 0.343ct loose stone

[12561453] Yellow sapphire 0.343ct loose stone Sale price¥12,800
coming soon [12561455] Yellow sapphire 0.508ct loose stone

[12561455] Yellow sapphire 0.508ct loose stone Sale price¥18,800
coming soon [12561462] Rubellite 0.332ct loose stone

[12561462] Rubellite 0.332ct loose stone Sale price¥12,800
coming soon [12561482] Dumortierite in Quartz 5.830ct Loose Stone

[12561482] Dumortierite in Quartz 5.830ct Loose Stone Sale price¥18,800
coming soon Zimbabwe sliced ​​trapiche diamond 0.206ct loose

Zimbabwe sliced ​​trapiche diamond 0.206ct loose Sale price¥19,800
Sold out 【12/6 22時販売】通常7万円のFANCY DEEPのピンクダイヤモンド0.072ctを含むダイヤガチャ💎VSクラス相当のアイスブルーダイヤモンドなど《複数購入割引有》

【12/6 22時販売】通常7万円のFANCY DEEPのピンクダイヤモンド0.072ctを含むダイヤガチャ💎VSクラス相当のアイスブルーダイヤモンドなど《複数購入割引有》
Limited to 16 stones: Loose tourmaline gemstones with special cuts, including Sakura in cut (from Congo) and Dandelion cut (from Brazil) (Multiple purchase discounts available)

Limited to 16 stones: Loose tourmaline gemstones with special cuts, including Sakura in cut (from Congo) and Dandelion cut (from Brazil) (Multiple purchase discounts available) Sale price¥4,980
Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available

Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available Sale price¥2,980
[Available at 10 PM on December 5th] Limited to 20 stones. Includes 6 red gemstones from the Pigeon Blood Ruby Gacha with AGL certificates. Discounts available for multiple purchases.

[Available at 10 PM on December 5th] Limited to 20 stones. Includes 6 red gemstones from the Pigeon Blood Ruby Gacha with AGL certificates. Discounts available for multiple purchases. Sale price¥6,980
【12/6 22時販売】インドネシア産パラサイティックペリドット 0.260ctルース

【12/6 22時販売】インドネシア産パラサイティックペリドット 0.260ctルース Sale price¥98,000
【12559635掲載】ドミニカ共和国産コンクパール（火焔模様有り） 0.207ctルース

【12/6 22時販売】ドミニカ共和国産コンクパール（火焔模様有り） 0.207ctルース（フラミンゴカラー） Sale price¥29,800
【12560377掲載】ブルートパーズキャッツアイ 3.538ctルース

【12/6 22時販売】ブラジル産ブルートパーズキャッツアイ 3.538ctルース Sale price¥12,800
【12/6 22時販売】インドネシア産パラサイティックペリドット 3.8mm/0.267ctルース

【12/6 22時販売】インドネシア産パラサイティックペリドット 3.8mm/0.267ctルース Sale price¥128,000
[12/6 22:00] Mexican Fire Agate 17.936ct Loose Stone

[12/6 22:00] Mexican Fire Agate 17.936ct Loose Stone Sale price¥49,800
[12/6 22:00] Mexican Fire Agate 10.683ct Loose Stone

[12/6 22:00] Mexican Fire Agate 10.683ct Loose Stone Sale price¥59,800
[12/6 22:00] Mexican Fire Agate 8.033ct Loose Stone

[12/6 22:00] Mexican Fire Agate 8.033ct Loose Stone Sale price¥39,800
[12/6 22:00] Colombian Cat's Eye Emerald 0.959ct Loose

[12/6 22:00] Colombian Cat's Eye Emerald 0.959ct Loose Sale price¥45,800
[12/6 22:00] Colombian Cat's Eye Emerald 1.121ct Loose

[12/6 22:00] Colombian Cat's Eye Emerald 1.121ct Loose Sale price¥49,800
【12560354掲載】ジンバブエ産バイカラーユークレース 0.206ctルース

【12/6 22時販売】ジンバブエ産バイカラーユークレース 0.206ctルース Sale price¥45,800
[12559779] Ruby 0.176ct loose stone

[12559779] Ruby 0.176ct loose stone Sale price¥18,800
【12/6 時販売】モザンビーク産ルビー 0.252ctルース

【12/6 時販売】モザンビーク産ルビー 0.252ctルース Sale price¥18,800
バイカラーサファイア 0.292ctルース

【12/6 22時販売】マダガスカル産バイカラーサファイア 0.292ctルース Sale price¥22,800
[12/6 22:00] Canadian Ammolite 17.043ct Loose Stone

[12/6 22:00] Canadian Ammolite 17.043ct Loose Stone Sale price¥49,800
Sold out [12/6 22:00] Myanmar Spinel in Marble 42.785ct Loose Stone

[12/6 22:00] Myanmar Spinel in Marble 42.785ct Loose Stone
[12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone

[12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone Sale price¥12,800
[12/6 22:00] Mexican Fire Agate 14.193ct Loose Stone

[12/6 22:00] Mexican Fire Agate 14.193ct Loose Stone Sale price¥79,800
【12560352掲載】ジンバブエ産ユークレース 0.397ctルース

【12/6 22時販売】ジンバブエ産ユークレース 4.3mm/0.397ctルース Sale price¥98,000
[12/6 22:00] Sri Lankan Blue Sapphire 109.529ct Rough Stone

[12/6 22:00] Sri Lankan Blue Sapphire 109.529ct Rough Stone Sale price¥8,800
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Assassination Classroom anime

[Sale: Friday, December 5th, 10 PM] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Five Great Jewels Figure (Limited to 100 units)

[Sale: Friday, December 5th, 10 PM] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Five Great Jewels Figure (Limited to 100 units) Sale price¥110,000
[Sale from 10pm on Friday, December 5th] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Model Ring

[Sale from 10pm on Friday, December 5th] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Model Ring Sale price¥22,800
[Sale from 10 PM on Friday, December 5th] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Model Pendant Top

[Sale from 10 PM on Friday, December 5th] Anime "Assassination Classroom" x KARATZ Collaboration Korosensei Model Pendant Top Sale price¥19,800
[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Necklace

[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Necklace Sale price¥22,800
[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Bracelet

[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Bracelet Sale price¥19,800
[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Earrings (Single)

[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Earrings (Single) Sale price¥12,800
[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Acrylic Stands (6 types)

[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Acrylic Stands (6 types) Sale price¥1,760
[Sale from 10 PM on Friday, December 5th] "Assassination Classroom" x KARATZ Collaboration Stickers (7 designs)

[Sale from 10 PM on Friday, December 5th] "Assassination Classroom" x KARATZ Collaboration Stickers (7 designs) Sale price¥385
[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ collaboration acrylic keychain (1 type)

[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ collaboration acrylic keychain (1 type) Sale price¥880
[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Acrylic Keychains (5 types, random)

[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Acrylic Keychains (5 types, random) Sale price¥880
[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Badges (7 types, random)

[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Badges (7 types, random) Sale price¥660
[Available on Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Badge (Complete Set)

[Available on Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Badge (Complete Set) Sale price¥4,620
[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Clear Cards (7 types, random)

[Sale: Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Clear Cards (7 types, random) Sale price¥330
[Available on Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Clear Cards (Complete Set)

[Available on Friday, December 5th at 10 PM] Assassination Classroom x KARATZ Collaboration Clear Cards (Complete Set) Sale price¥2,310
Show more

List of new arrivals

バイカラーサファイア 0.292ctルース

【12/6 22時販売】マダガスカル産バイカラーサファイア 0.292ctルース Sale price¥22,800
インターナリーフローレスダイヤモンド（H&C） 4.45mm/0.305ctルース(F, IF, 3Excellent H&C) GIA&中宝

[Sale Date: 12/5 10 PM] Internally Flawless Diamond (H&C) 4.45mm/0.305ct Loose (F, IF, 3 Excellent H&C) Sale price¥98,000
ブラックスターサファイア 1.410ctルース

[12/5 22:00 Sale] Black Star Sapphire 1.410ct Loose Sale price¥9,800
【さくらインカット】マダガスカル産アパタイト 7.9mm/1.537ct《コラボ》ルース ワッペン

[Sale starts at 10 PM on December 5th] [Sakura In-Cut] Madagascar Green Apatite 7.9mm/1.537ct [Collaboration] Loose Stone with Patch Sale price¥45,800
アルマンディンガーネット 2.090ctルース

[Rouge cut] Almandine garnet 2.090ct loose Sale price¥8,800
アルマンディンガーネット 2.076ctルース

[Rouge cut] Almandine garnet 2.076ct loose Sale price¥8,800
【甲州貴石切子plusthree】パイライトインクォーツ 12.164ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Pyrite in quartz 12.164ct loose with patch Sale price¥25,800
【甲州貴石切子】モルガナイト 14.931ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Morganite 14.931ct《Collaboration》Loose with emblem Sale price¥79,800
オーストラリア産オパール 0.286ctルース

Australian opal 0.286ct loose Sale price¥5,980
【サンジェ氏】ブルージルコン 0.397ctルース

Blue zircon 0.397ct loose stone Sale price¥6,980
【サンジェ氏】ブルージルコン 0.322ctルース

Blue zircon 0.322ct loose stone Sale price¥5,980
オレゴンサンストーン 0.976ctルース

Oregon Sunstone 0.976ct loose Sale price¥18,800
アマゾン産グリーンオパール 1.120ctルース

Amazon green opal 1.120ct loose Sale price¥3,980
【サンジェ氏】YAG（イットリウムアルミニウムガーネット） 7mm/1.775ctルース

YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone Sale price¥9,800
ナミビア産ダイオプテーズ 0.229ctルース 日独鑑

Dioptase from Namibia 0.229ct loose Japanese-German book Sale price¥69,800
マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 1.127ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) from Madagascar 1.127ct loose Sale price¥7,980
バイカラーアンデシン 6mm/0.756ctルース

Bicolor Andesine 6mm/0.756ct loose Sale price¥12,800
ピンクスピネル 0.409ctルース

Pink spinel 0.409ct loose Sale price¥6,980
ブラジル産ロードナイト 2.126ctルース 日独鑑

Brazilian Rhodonite 2.126ct Ruth Japanese-German Edition Sale price¥79,800
オーストラリア産ボルダーオパール 3.695ctルース

Australian boulder opal 3.695ct loose Sale price¥14,800
オーストラリア産ボルダーオパール 2.470ctルース

Australian boulder opal 2.470ct loose Sale price¥7,980
ナミビア産ダイオプテーズ 3.3mm/0.162ctルース 日独鑑

Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition Sale price¥79,800
Pink tourmaline 0.516ct loose

Pink tourmaline 0.516ct loose Sale price¥5,980
ミャンマー産トラピッチェルビー 0.179ct原石

Myanmar trapichel ruby ​​0.179ct rough stone Sale price¥3,980
スリランカ産非加熱スターサファイア 2.094ctルース

Sri Lankan star sapphire 2.094ct loose Sale price¥12,800
アメリカ産レッドベリル 2.9mm/0.094ctルース

American red beryl 2.9mm/0.094ct loose Sale price¥29,800
バイカラーアンデシン 0.852ctルース

Bicolor Andesine 6mm/0.852ct loose (color shift) Sale price¥12,800
バイカラーアンデシン 0.824ctルース

Bicolor Andesine 6mm/0.824ct loose (color shift) Sale price¥12,800
バイカラーアンデシン 0.699ctルース

Bicolor Andesine 6mm/0.699ct loose (color shift) Sale price¥12,800
バイカラーアンデシン 0.783ctルース

Bicolor Andesine 6mm/0.783ct loose (color shift) Sale price¥12,800
スリランカ産スターサファイア 1.487ctルース

Sri Lankan star sapphire 1.487ct loose Sale price¥8,800
アベンチュリンアクアマリンキャッツアイ 1.567ctルース

Aventurine Aquamarine Cat's Eye 1.567ct Loose Sale price¥4,980
スキャポライトキャッツアイ 9.733ctルース

Scapolite Cat's Eye 9.733ct Loose Sale price¥6,980
クォーツ 96.732ctルース（爆裂水晶）

Quartz 96.732ct loose (explosion crystal) Sale price¥2,980
バイカラータンザナイト 0.479ctルース

Bicolor tanzanite 0.479ct loose Sale price¥18,800
ヘミモルファイト 34.490ctルース

Hemimorphite 34.490ct loose Sale price¥55,800
コロンビア産パイライトインエメラルド 4.592ctルース

Colombian pyrite in emerald 4.592ct loose Sale price¥110,000
カンボジア産ブルージルコン（ラタナキリブルー） 2.143ctルース

Cambodian blue zircon (Ratanakiri blue) 2.143ct loose Sale price¥29,800
グリーンサファイア 0.518ctルース

Green sapphire 0.518ct loose (teal green) Sale price¥8,800
カラーチェンジサファイア 0.946ctルース

Color change sapphire 0.946ct loose Sale price¥29,800
モザンビーク産パライバトルマリン 0.243ctルース

Paraiba tourmaline from Mozambique 0.243ct loose Sale price¥15,800
ベトナム産非加熱シルキーピンクサファイア 0.426ctルース

Unheated silky pink sapphire from Vietnam 0.426ct loose Sale price¥9,800
奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 2.483ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 2.483ct loose Sale price¥15,800
See more list of new arrivals

《Products eligible for multiple purchase discount》

【12/6 22時販売】《13石限定》さくらインカットやダンデライオンカットを含むスピネルガチャ1石ルース《複数購入割引有》

【12/6 22時販売】《13石限定》さくらインカットやダンデライオンカットを含むスピネルガチャ1石ルース《複数購入割引有》 Sale price¥4,980
【12/6 22時販売】《数量限定》何が届くかお楽しみ！原石＆ルース2石セットガチャ〈レアストーンあり〉《複数購入割引有》　

【12/6 22時販売】《数量限定》何が届くかお楽しみ！原石＆ルース2石セットガチャ〈レアストーンあり〉《複数購入割引有》　 Sale price¥1,680
Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available

Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available Sale price¥2,980
[12/5 10 PM Sale] Limited to 12 stones: 1 loose Chinese Xinsha stone (average 1.34 carats, all stones come with a certificate of authenticity) [Multiple purchase discounts available]

[12/5 10 PM Sale] Limited to 12 stones: 1 loose Chinese Xinsha stone (average 1.34 carats, all stones come with a certificate of authenticity) [Multiple purchase discounts available] Sale price¥15,800
Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases.

Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥1,580
[Sale ends 12/5 at 10 PM] December Special Campaign! Limited to 14 stones. December Birthstone: Tanzanite, 1 loose stone (5x7mm, oval cut). Multiple purchase discounts available.

[Sale ends 12/5 at 10 PM] December Special Campaign! Limited to 14 stones. December Birthstone: Tanzanite, 1 loose stone (5x7mm, oval cut). Multiple purchase discounts available. Sale price¥8,800
[Available at 10 PM on December 5th] Limited to 20 stones. Includes 6 red gemstones from the Pigeon Blood Ruby Gacha with AGL certificates. Discounts available for multiple purchases.

[Available at 10 PM on December 5th] Limited to 20 stones. Includes 6 red gemstones from the Pigeon Blood Ruby Gacha with AGL certificates. Discounts available for multiple purchases. Sale price¥6,980
[Available at 10 PM on November 24th] Limited Edition (12 stones) VS Equivalent Fluorescent Diamond Gacha with Bonus Mini Slice Diamond (Multiple Purchase Discounts Available)

[Available at 10 PM on November 24th] Limited Edition (12 stones) VS Equivalent Fluorescent Diamond Gacha with Bonus Mini Slice Diamond (Multiple Purchase Discounts Available) Sale price¥6,980
[On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available]

[On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available] Sale price¥3,980
[On sale November 16th at 10pm] [Limited to 32 stones] Namibian Mandarin Garnet Loose Stone (Round Cut, 2.5mm) [Multiple purchase discounts available]

[On sale November 16th at 10pm] [Limited to 32 stones] Namibian Mandarin Garnet Loose Stone (Round Cut, 2.5mm) [Multiple purchase discounts available] Sale price¥5,980
[On sale at 10 PM on November 15th] Limited to 9 stones: One rough petalite stone from Myanmar (average 6.0 carats) [Multiple purchase discounts available]

[On sale at 10 PM on November 15th] Limited to 9 stones: One rough petalite stone from Myanmar (average 6.0 carats) [Multiple purchase discounts available] Sale price¥2,980
[On sale November 15th at 10 PM] [Limited to 7 stones] One loose colorless apatite from Madagascar (all stones come with a certificate of authenticity, average 0.60 carat) [Multiple purchase discounts available]

[On sale November 15th at 10 PM] [Limited to 7 stones] One loose colorless apatite from Madagascar (all stones come with a certificate of authenticity, average 0.60 carat) [Multiple purchase discounts available] Sale price¥4,980
[Available at 10 PM on November 15th] Limited Quantity: Single Rough Neon Blue Apatite from Madagascar (Average 2.2 carats) [Multiple Purchase Discounts Available]

[Available at 10 PM on November 15th] Limited Quantity: Single Rough Neon Blue Apatite from Madagascar (Average 2.2 carats) [Multiple Purchase Discounts Available] Sale price¥1,280
[Available at 10 PM on November 8th] [Limited to 3 stones] Indian Andesine Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone [Multiple purchase discounts available]

[Available at 10 PM on November 8th] [Limited to 3 stones] Indian Andesine Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone [Multiple purchase discounts available] Sale price¥3,980
[On sale November 8th at 10pm] Limited to 4 stones: Carving Gacha (pink tourmaline, average 3.4 carats) 1 loose stone [Multiple purchase discounts available]

[On sale November 8th at 10pm] Limited to 4 stones: Carving Gacha (pink tourmaline, average 3.4 carats) 1 loose stone [Multiple purchase discounts available] Sale price¥3,980
[On sale November 8th at 10pm] Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone [Multiple purchase discounts available]

[On sale November 8th at 10pm] Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone [Multiple purchase discounts available] Sale price¥2,980
[On sale November 8th at 10pm] Limited to 7 stones: One loose Indian iolite sunstone (custom cut by Sanjay) [Multiple purchase discounts available]

[On sale November 8th at 10pm] Limited to 7 stones: One loose Indian iolite sunstone (custom cut by Sanjay) [Multiple purchase discounts available] Sale price¥5,980
[On sale November 8th at 10pm] Limited to 8 stones: Synthetic Alexandrite Loose Stone (Custom cut by Mr. Sanjay, Shield cut, Octagonal cut, etc.) [Multiple purchase discounts available]

[On sale November 8th at 10pm] Limited to 8 stones: Synthetic Alexandrite Loose Stone (Custom cut by Mr. Sanjay, Shield cut, Octagonal cut, etc.) [Multiple purchase discounts available] Sale price¥6,980
[On sale November 3rd at 10pm] [Limited to 14 stones] One loose Russian oil-free emerald (2.1mm, square cut) [Multiple purchase discounts available]

[On sale November 3rd at 10pm] [Limited to 14 stones] One loose Russian oil-free emerald (2.1mm, square cut) [Multiple purchase discounts available] Sale price¥5,980
[Sales start November 2nd at 10 PM] [Limited to 10 stones] Tanzanite rough gacha including bicolor pink tanzanite rough (average 4.2 carats) [Multiple purchase discounts available]

[Sales start November 2nd at 10 PM] [Limited to 10 stones] Tanzanite rough gacha including bicolor pink tanzanite rough (average 4.2 carats) [Multiple purchase discounts available] Sale price¥6,980
Limited to 8 stones: Colombian mango quartz (up to 60 carats, average 21.6 carats) [Multiple purchase discounts available]

Limited to 8 stones: Colombian mango quartz (up to 60 carats, average 21.6 carats) [Multiple purchase discounts available] Sale price¥1,980
[On sale November 1st at 10 PM] [Limited to 12 stones] Brazilian Indigolite Tourmaline Gacha Loose Stone (4x3mm, Oval Cut) [Multiple purchase discounts available]

[On sale November 1st at 10 PM] [Limited to 12 stones] Brazilian Indigolite Tourmaline Gacha Loose Stone (4x3mm, Oval Cut) [Multiple purchase discounts available] Sale price¥4,980
Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available)

Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available) Sale price¥3,980
Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone. Discounts available for multiple purchases.

Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone. Discounts available for multiple purchases. Sale price¥3,980
Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose stone. Discounts available for multiple purchases.

Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose stone. Discounts available for multiple purchases. Sale price¥4,980
Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available] Sale price¥2,980
See more products eligible for multiple purchase discounts

Adult Sebonstar (Sebonstar x KARATZ collaboration jewelry)

[Lottery Sales Page] Adult Sebon Star 3rd Edition Charmy Premium Model <Royal Blue Sapphire> (Sales Price: 1,580,000 yen)

[Lottery Sales Page] Adult Sebon Star 3rd Edition Charmy Premium Model <Royal Blue Sapphire> (Sales Price: 1,580,000 yen) Sale price¥0
coming soon [Sales start at 10 PM on December 10th] Sebonstar Jewelry for Adults, Part 3: Sebonstar Pendant for Adults, Mirage Edition (Silver Model/Precious Model)

[Sales start at 10 PM on December 10th] Sebonstar Jewelry for Adults, Part 3: Sebonstar Pendant for Adults, Mirage Edition (Silver Model/Precious Model) Sale priceFrom ¥29,800
coming soon [Sales start at 10 PM on December 10th] Adult Sebon Star 1st Edition Pendant Silver Model (SV925)

[Sales start at 10 PM on December 10th] Adult Sebon Star 1st Edition Pendant Silver Model (SV925) Sale price¥29,800
coming soon [Sales start at 10 PM on December 10th] Adult Sebon Star 1st Edition Pendant Precious Model (Pt950, K18YG, K18PG)

[Sales start at 10 PM on December 10th] Adult Sebon Star 1st Edition Pendant Precious Model (Pt950, K18YG, K18PG) Sale price¥198,000
coming soon [Sales start at 10 PM on December 10th] Adult Sebonstar 1st Ring Silver Model (SV925)

[Sales start at 10 PM on December 10th] Adult Sebonstar 1st Ring Silver Model (SV925) Sale price¥29,800
coming soon [Sales start at 10 PM on December 10th] Sebonstar for Adults First Ring Precious Model (Pt950, K18YG, K18PG)

[Sales start at 10 PM on December 10th] Sebonstar for Adults First Ring Precious Model (Pt950, K18YG, K18PG) Sale price¥198,000
coming soon [Sales start at 10pm on December 10th] Adult Sebon Star Adjuster Charm

[Sales start at 10pm on December 10th] Adult Sebon Star Adjuster Charm Sale price¥15,800
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KARATZ collaboration
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Custom-made with a choice of stones

1石から選ぶオーダーメイド《リ ング》申し込みページ ～ Solo(ソロ) ～ - カラッツSTORE
1石から選ぶオーダーメイド《ペ ンダント》申し込み～ SOLO(ソロ) ～ - カラッツSTORE
1石から選ぶオーダーメイド《ピ アス》申し込みページ ～ Solo(ソロ) ～ - カラッツSTORE
Learn more about custom-made products

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ publishes "Gemstone Encyclopedia"

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.