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September birthstones: Sapphire and Kunzite
KARATZ Books
Custom-made jewelry with stones
July birthstone: Ruby and Sphene
Paraiba tourmaline special feature

NEWS

2025/08/21

[Notice] Apology for shipping delay

2025/08/03

[Notice] Notice regarding orders and delivery during the Obon period

New Arrivals & Updates on Thursday, August 21st

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 【8/23 22時販売】《限定8石》ブラジル産レインボーアクアマリン1石ルース（ペアシェイプ）《複数購入割引有》

【8/23 22時販売】《限定8石》ブラジル産レインボーアクアマリン1石ルース（ペアシェイプ）《複数購入割引有》 Sale price¥3,980
coming soon 【8/23 22時販売】《限定3石》インド産アンデシン・ラブラドライト（レインボームーンストーン）フラワーカービング6mm 1石《複数購入割引有》

【8/23 22時販売】《限定3石》インド産アンデシン・ラブラドライト（レインボームーンストーン）フラワーカービング6mm 1石《複数購入割引有》 Sale price¥4,980
coming soon コーンフラワーブルーサファイア 0.530ctルース AIGS

Cornflower blue sapphire 0.530ct loose stone Sale price¥128,000
coming soon 【12558647掲載】サファリン 0.466ctルース

【8/24 22時販売】スリランカ産サファリン 0.466ctルース 鑑別書 Sale price¥37,800
coming soon [12560183] Mexican Fire Opal (Faceted) 0.207ct Loose

[12560183] Mexican Fire Opal (Faceted) 0.207ct Loose Sale price¥12,800
coming soon 【12557769掲載】スタールビー 0.496ctルース

【8/24 22時販売】スリランカ産スタールビー 0.496ctルース 鑑別書 Sale price¥18,800
coming soon リューコガーネット 0.371ctルース

[12558092] Leuco garnet 0.371ct loose stone Sale price¥39,800
coming soon ブラジル産ミントカラーエメラルド 0.638ctルース

【8/24 22時販売】ブラジル産ミントカラーエメラルド 5.5mm/0.638ctルース Sale price¥8,800
coming soon コロンビア産ミントカラーエメラルド 0.306ctルース

【8/24 22時販売】コロンビア産ミントカラーエメラルド 4.3mm/0.306ctルース Sale price¥8,800
coming soon コロンビア産ミントカラーエメラルド 0.244ctルース

【8/24 22時販売】コロンビア産ミントカラーエメラルド 4.1mm/0.244ctルース Sale price¥8,800
coming soon 非加熱ルビー 0.680ctルース

[Published on 12560214] Unheated Ruby 0.680ct Loose Sale price¥88,800
coming soon レッドスピネル 0.346ctルース

[Published on 12560213] Red Spinel 0.346ct Loose Sale price¥22,800
coming soon ブラジル産インディゴライトトルマリン 0.287ctルース

[12558099] Brazilian indigolite tourmaline 0.287ct loose stone Sale price¥12,800
coming soon 【12530741掲載】オパール 1.020ctルース

Opal 1.020ct loose Sale price¥29,800
coming soon オパール 6.560ctルース

Opal 6.560ct loose Sale price¥39,800
coming soon パパラチアサファイア 3.4mm/0.200ctルース DGL

Padparadscha sapphire 0.200ct loose Sale price¥29,800
coming soon 【12533236掲載】ホワイトサファイア 0.338ctルース

White sapphire 0.338ct loose Sale price¥9,800
coming soon ホワイトサファイア 0.212ctルース

White sapphire 0.212ct loose Sale price¥6,980
coming soon ホワイトサファイア 0.271ctルース

White sapphire 0.271ct loose Sale price¥7,980
coming soon ホワイトサファイア 0.364ctルース

White sapphire 0.364ct loose Sale price¥9,800
coming soon イエローサファイア 0.385ctルース

Yellow sapphire 0.385ct loose Sale price¥9,800
coming soon White sapphire 0.418ct loose

White sapphire 0.418ct loose Sale price¥12,800
coming soon 【甲州貴石切子】スポジュメン 8.480ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Spodumene 8.480ct《Collaboration》Loose with emblem Sale price¥45,800
coming soon 【甲州貴石切子】スポジュメン 7.390ctルース《コラボ》ワッペン付

[Koshu Precious Stone Kiriko] Spodumene 7.390ct loose "Collaboration" with emblem Sale price¥39,800
coming soon 【さくらインカット】非加熱ピンクサファイア 2.442ctルース《コラボ》日独鑑 - カラッツSTORE

[Sakura in-cut] Unheated pink sapphire 2.442ct loose "Collaboration" Japanese-German edition Sale price¥188,000
coming soon Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%)

Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%) Sale price¥25,800
coming soon ブラジル産パライバトルマリン 0.160ctルース（ CuO:0.9%、MnO:3.9%）

Paraiba tourmaline from Brazil 0.160ct loose (CuO:0.9%, MnO:3.9%) Sale price¥29,800
coming soon Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%)

Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%) Sale price¥29,800
coming soon Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%)

Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%) Sale price¥29,800
coming soon ホワイトサファイア 4.5mm/0.414ctルース

White sapphire 4.5mm/0.414ct loose Sale price¥12,800
coming soon ホワイトサファイア 0.462ctルース

White sapphire 4.5mm/0.462ct loose Sale price¥9,800
coming soon ホワイトサファイア 0.464ctルース

White sapphire 0.464ct loose Sale price¥9,800
coming soon ホワイトサファイア 0.537ctルース

White sapphire 0.537ct loose Sale price¥15,800
coming soon 【12533270掲載】レッドベリル 0.187ctルース

Red beryl 0.187ct loose Sale price¥29,800
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） 0.416ctルース

[Available at 10 PM on August 22nd] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 5.1mm/0.416ct Loose Stone Sale price¥15,800
See more new and updated items from Thursday, August 21st

List of new arrivals

coming soon 【12533270掲載】レッドベリル 0.187ctルース

Red beryl 0.187ct loose Sale price¥29,800
coming soon ホワイトサファイア 0.537ctルース

White sapphire 0.537ct loose Sale price¥15,800
coming soon ホワイトサファイア 0.464ctルース

White sapphire 0.464ct loose Sale price¥9,800
coming soon ホワイトサファイア 0.462ctルース

White sapphire 4.5mm/0.462ct loose Sale price¥9,800
coming soon ホワイトサファイア 4.5mm/0.414ctルース

White sapphire 4.5mm/0.414ct loose Sale price¥12,800
coming soon Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%)

Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%) Sale price¥29,800
coming soon ブラジル産パライバトルマリン 0.160ctルース（ CuO:0.9%、MnO:3.9%）

Paraiba tourmaline from Brazil 0.160ct loose (CuO:0.9%, MnO:3.9%) Sale price¥29,800
coming soon Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%)

Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%) Sale price¥25,800
coming soon Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%)

Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%) Sale price¥29,800
【12533118掲載】スイートホーム産ロードクロサイト 0.228ctルース

Sweet Home rhodochrosite 2 stone set 2.6mm/0.228ct loose Sale price¥9,800
カンテラオパール 8.970ctルース

[Posted 12533051] Cantera Opal 8.970ct Loose Sale price¥12,800
カンテラオパール 5.750ctルース

Cantera Opal 5.750ct loose Sale price¥18,800
【12532838掲載】アンドラダイトガーネット（通称名 レインボーガーネット） 2.869ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 2.869ct loose Sale price¥2,980
シトリン 1.337ctルース - カラッツSTORE

Brazilian citrine 1.337ct loose stone Sale price¥3,980
【KEN氏】ヴァイオレットスピネル 0.514ctルース - カラッツSTORE

Violet spinel 0.514ct loose stone Sale price¥6,980
アレキサンドライト 0.138ctルース

[Posted 12532932] Alexandrite 0.138ct loose Sale price¥18,800
ルビー 0.213ctルース

Ruby 0.213ct loose Sale price¥7,980
【KEN氏】トルマリン 0.360ctルース - カラッツSTORE

Tourmaline 0.360ct loose stone Sale price¥2,980
北海道産UVオパール 7.860ctルース

(Fluorescent photo) [Published in 12532441] UV opal from Hokkaido 7.860ct loose with emblem Sale price¥8,800
北海道産UVオパール 11.900ctルース

[12532439 published] Hokkaido UV opal 11.900ct loose with patch Sale price¥8,800
グリーントルマリンキャッツアイ 6.480ctルース

Green tourmaline cat's eye 6.480ct loose Sale price¥8,800
トルマリンキャッツアイ 4.790ctルース

Tourmaline cat's eye 4.790ct loose Sale price¥6,980
トルマリンキャッツアイ 4.590ctルース

Tourmaline cat's eye 4.590ct loose Sale price¥12,800
【KEN氏】パープルスピネル 0.825ctルース - カラッツSTORE

Purple spinel 0.825ct loose stone Sale price¥5,980
【KEN氏】ジルコン 0.654ctルース - カラッツSTORE

Zircon 0.654ct loose stone Sale price¥8,800
モルガナイト 0.960ctルース（アッシャーカット）

Morganite 0.960ct loose (Asscher cut) Sale price¥9,800
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） 0.550ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) 0.550ct loose Sale price¥6,980
【KEN氏】アクアマリン 0.940ctルース - カラッツSTORE

Aquamarine 0.940ct loose stone Sale price¥8,800
バイカラートルマリン 0.880ctルース

Bicolor tourmaline 0.880ct loose Sale price¥8,800
バイカラートルマリン 1.220ctルース

Bicolor tourmaline 1.220ct loose Sale price¥15,800
【甲州貴石切子】イエローフローライト 30.09ctルース 《コラボ》 ワッペン付

[Koshu Precious Stone Kiriko] Yellow Fluorite 30.09ct Loose [Collaboration] With Patch Sale price¥79,800
レッドベリル 0.166ctルース

Red beryl 0.166ct loose Sale price¥49,800
クンツァイト 10.560ctルース

Kunzite 10.560ct loose Sale price¥9,800
クンツァイト 10.01ctルース

Kunzite 10.01ct loose Sale price¥9,800
カナリーイエローダイヤモンド（トリートメント） 0.029ctルース

[Posted in 12530233] Canary Yellow Diamond (Treatment) 0.029ct Loose Sale price¥5,980
ダイヤモンド 2.810ct原石

Diamond 2.810ct rough stone Sale price¥9,800
エメラルドキャッツアイ 0.417ctルース

Colombian emerald cat's eye 0.417ct loose Sale price¥39,800
スライストラピッチェダイヤモンド 0.228ctルース

[On sale at 10pm on August 19th] Sliced ​​Trapiche Diamond 0.228ct Loose Sale price¥18,800
ブラジル産レインボーアクアマリン 1.267ctルース

[On Sale at 10 PM on August 17th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.267ct Loose Stone Sale price¥8,800
メキシコ産カンテラオパール 2.125ctルース

[On Sale at 10 PM on August 17th] Mexican Cantera Opal 2.125ct Loose Sale price¥39,800
タンザニア産ジルコン 3.548ctルース

[On Sale at 10 PM on August 17th] Tanzanian Golden Zircon 3.548ct Loose Stone Sale price¥39,800
Limited Stock Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available)

Limited Stock Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available) Sale price¥5,980
ブラジル産レインボーアクアマリン 1.153ctルース

[On Sale at 10 PM on August 17th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.153ct Loose Stone Sale price¥8,800
See more list of new arrivals

KARATZ collaboration

[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges

[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges Sale price¥1,980
[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges

[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges Sale price¥3,300
[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges

[Sales start on Friday, August 8th at 22:00] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges Sale price¥880
[Sales start on Friday, August 22nd at 10:00 PM] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges (8 types in total)

[Sales start on Friday, August 22nd at 10:00 PM] TV anime "Date A Live V" x KARATZ collaboration foil-stamped glitter can badges (8 types in total) Sale price¥660
[On sale from 10 PM on Saturday, August 16th] Limited to 30 units: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure gold (24K) coin

[On sale from 10 PM on Saturday, August 16th] Limited to 30 units: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure gold (24K) coin Sale price¥358,000
Sold out [On sale from 10 PM on Saturday, August 16th] Limited to 30 units: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure platinum (PT999) coin

[On sale from 10 PM on Saturday, August 16th] Limited to 30 units: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure platinum (PT999) coin

[On sale from 10 PM on Saturday, August 16th] Limited to 100 coins: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure silver (SV999) coin

[On sale from 10 PM on Saturday, August 16th] Limited to 100 coins: "PSYCHO-PASS: PROVIDENCE" x KARATZ collaboration pure silver (SV999) coin Sale price¥29,800
[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Chain Ring

[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Chain Ring Sale price¥16,500
[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Rock Ear Cuff (Single)

[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Rock Ear Cuff (Single) Sale price¥11,000
[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Mark Ring

[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Mark Ring Sale price¥22,800
[Sales end on Sunday, August 31st] TV anime "A long time ago, magical girls and evil were enemies." x KARATZ collaboration acrylic keychain featuring newly drawn illustrations

[Sales end on Sunday, August 31st] TV anime "A long time ago, magical girls and evil were enemies." x KARATZ collaboration acrylic keychain featuring newly drawn illustrations Sale price¥990
[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration heart badge featuring newly drawn illustrations

[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration heart badge featuring newly drawn illustrations Sale price¥550
[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration tin mirror featuring newly drawn illustration

[Sales end on Sunday, August 31st] TV anime "Magical Girls and Evil Were Once Enemies" x KARATZ collaboration tin mirror featuring newly drawn illustration Sale price¥770
[Sales end on Sunday, August 31st] TV anime "A long time ago, magical girls and evil were enemies." x KARATZ collaboration acrylic coaster featuring newly drawn illustrations

[Sales end on Sunday, August 31st] TV anime "A long time ago, magical girls and evil were enemies." x KARATZ collaboration acrylic coaster featuring newly drawn illustrations Sale price¥1,320
[Sales End on Sunday, August 31st] TV Anime "A Long Time Ago, Magical Girls and Evil Were Enemies" x KARATZ Collaboration Magical Girl Theme Necklace - Mimori Byakuya Model -

[Sales End on Sunday, August 31st] TV Anime "A Long Time Ago, Magical Girls and Evil Were Enemies" x KARATZ Collaboration Magical Girl Theme Necklace - Mimori Byakuya Model - Sale priceFrom ¥11,800
[Sales End on Sunday, August 31st] TV Anime "A Long Time Ago, Magical Girls and Evil Were Enemies" x KARATZ Collaboration Magical Girl Theme Necklace - Kagari Sparks Model -

[Sales End on Sunday, August 31st] TV Anime "A Long Time Ago, Magical Girls and Evil Were Enemies" x KARATZ Collaboration Magical Girl Theme Necklace - Kagari Sparks Model - Sale priceFrom ¥11,800
[Giveaway Pair Tickets Until August 31st] Fukuoka SoftBank Hawks "Young Hawks Ring" - Single Type | SV925 with Yellow Chalcedony

[Giveaway Pair Tickets Until August 31st] Fukuoka SoftBank Hawks "Young Hawks Ring" - Single Type | SV925 with Yellow Chalcedony Sale price¥25,800
Sold out [Sold out] TV anime "Tokyo Ghoul" x KARATZ collaboration Kaneki Rinkaku image ring and pendant top | Silver (SV925)

[Sold out] TV anime "Tokyo Ghoul" x KARATZ collaboration Kaneki Rinkaku image ring and pendant top | Silver (SV925)

See more KARATZ collaborations

《Products eligible for multiple purchase discount》

Limited Stock Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available)

Limited Stock Pink Diamond Gacha! 💎 Fancy Light Pink Diamond 0.117ct (Certified) Includes One UV-Resistant Pink Diamond (Multiple Purchase Discounts Available) Sale price¥5,980
Limited Stock! Rare Stone Gacha with Certificate of Authenticity (Taaffeite, Bicolor Spinel, and Benitoite) - 1 Loose Stone (Multiple Purchase Discounts Available)

Limited Stock! Rare Stone Gacha with Certificate of Authenticity (Taaffeite, Bicolor Spinel, and Benitoite) - 1 Loose Stone (Multiple Purchase Discounts Available) Sale price¥29,800
Limited Edition of 11: Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) [Multiple purchase discounts available]

Limited Edition of 11: Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) [Multiple purchase discounts available] Sale price¥3,980
[Available on August 31st at 22:00 PM] Limited to 14 sets: Myanmar jadeite 3-color set [Multiple purchase discounts available]

[Available on August 31st at 22:00 PM] Limited to 14 sets: Myanmar jadeite 3-color set [Multiple purchase discounts available] Sale price¥8,800
[Available at 10 PM on August 10th] Limited Quantity: Brazilian Yellow Danburite Loose Stone [Multiple Purchase Discounts Available]

[Available at 10 PM on August 10th] Limited Quantity: Brazilian Yellow Danburite Loose Stone [Multiple Purchase Discounts Available] Sale price¥2,980
[Available at 10 PM on August 14th] [Limited to 10 stones] Brazilian Santa Maria Aquamarine Loose Stone [Multiple purchase discounts available]

[Available at 10 PM on August 14th] [Limited to 10 stones] Brazilian Santa Maria Aquamarine Loose Stone [Multiple purchase discounts available] Sale price¥5,980
[Available from 10/8] [Limited to 7 stones] Brazilian Santa Maria Aquamarine Loose Stone [Multiple purchase discounts available]

[Available from 10/8] [Limited to 7 stones] Brazilian Santa Maria Aquamarine Loose Stone [Multiple purchase discounts available] Sale price¥6,980
[Available at 10 PM on August 9th] Limited Quantity: 1.5mm Pink Spinel from Myanmar (including Hot Pink Spinel) [Multiple Purchase Discounts Available]

[Available at 10 PM on August 9th] Limited Quantity: 1.5mm Pink Spinel from Myanmar (including Hot Pink Spinel) [Multiple Purchase Discounts Available] Sale price¥2,580
[Available at 10 PM on August 10th] Limited to 27 stones: Peridot (Trilliant Cut) 1 stone (5.0-5.5mm) [Multiple purchase discounts available]

[Available at 10 PM on August 10th] Limited to 27 stones: Peridot (Trilliant Cut) 1 stone (5.0-5.5mm) [Multiple purchase discounts available] Sale price¥6,980
[Available at 10 PM on August 9th] Limited to 4 stones: Peridot (Flanders Cut) x 1 stone [Multiple purchase discounts available]

[Available at 10 PM on August 9th] Limited to 4 stones: Peridot (Flanders Cut) x 1 stone [Multiple purchase discounts available] Sale price¥5,980
Limited to 5 sets! Fluorescent Diamond Gacha! 💎 Set of 2 loose diamonds (2.4-3.4mm) [Multiple purchase discounts available]

Limited to 5 sets! Fluorescent Diamond Gacha! 💎 Set of 2 loose diamonds (2.4-3.4mm) [Multiple purchase discounts available] Sale price¥2,980
[Available at 10 PM on August 2nd] {Limited to 8 sets} Gemstone Gacha 💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires {Multiple purchase discounts available}

[Available at 10 PM on August 2nd] {Limited to 8 sets} Gemstone Gacha 💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires {Multiple purchase discounts available} Sale price¥6,980
[Available at 10 PM on August 2nd] [Limited to 6 stones] Zimbabwean sphene loose stone [Multiple purchase discounts available]

[Available at 10 PM on August 2nd] [Limited to 6 stones] Zimbabwean sphene loose stone [Multiple purchase discounts available] Sale price¥5,980
[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available]

[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available] Sale price¥4,980
[Available at 10 PM on August 2nd] Limited to 8 stones: Nobu Buff Top x Rose Cut Spinel (1 loose stone) [Multiple purchase discounts available]

[Available at 10 PM on August 2nd] Limited to 8 stones: Nobu Buff Top x Rose Cut Spinel (1 loose stone) [Multiple purchase discounts available] Sale price¥6,980
Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases.

Limited to 13 stones: One loose rhodochrosite stone (4mm cabochon cut) from Detroit City, USA. Discounts available for multiple purchases. Sale price¥7,980
Limited to 6 stones: 1 loose canary yellow tourmaline from Mozambique. Discounts available for multiple purchases.

Limited to 6 stones: 1 loose canary yellow tourmaline from Mozambique. Discounts available for multiple purchases. Sale price¥6,980
Limited to 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available

Limited to 8 stones: 1 Sri Lankan star sapphire loose stone (5mm, round cabochon cut) Multiple purchase discounts available Sale price¥7,980
Limited to 10 stones: 1 loose star sapphire from Sri Lanka. Discounts available for multiple purchases.

Limited to 10 stones: 1 loose star sapphire from Sri Lanka. Discounts available for multiple purchases. Sale price¥2,980
Limited to 4 stones: 1 bicolor grossular garnet from Tanzania (multiple purchase discounts available)

Limited to 4 stones: 1 bicolor grossular garnet from Tanzania (multiple purchase discounts available) Sale price¥5,980
Limited to 8 stones: 1 Brazilian ametrine loose stone (concave cut, average 7 carats) Multiple purchase discounts available

Limited to 8 stones: 1 Brazilian ametrine loose stone (concave cut, average 7 carats) Multiple purchase discounts available Sale price¥5,980
Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.5mm) Multiple purchase discounts available

Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.5mm) Multiple purchase discounts available Sale price¥6,980
Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.2mm) Multiple purchase discounts available

Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.2mm) Multiple purchase discounts available Sale price¥5,980
Limited to 25 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.0 mm) Multiple purchase discounts available

Limited to 25 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.0 mm) Multiple purchase discounts available Sale price¥5,980
Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases.

Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980
Limited to 9 stones Gem gacha💎 April birthstone gacha: A gacha where you can win a fan-cut diamond with AGT sorting or a morganite. Multiple purchase discounts available.

Limited to 9 stones Gem gacha💎 April birthstone gacha: A gacha where you can win a fan-cut diamond with AGT sorting or a morganite. Multiple purchase discounts available. Sale price¥3,980
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Pt900アイスブルーダイヤモンド0.333ct 0.333ct ピアス

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Custom-made with a choice of stones

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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

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.