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【KEN氏】モンテブラサイト 1石（4.5mm,ラウンドカット） - カラッツSTORE

Brazilian Montebrasite 1 stone (4.5mm, round cut) (Multi-item discount available) Sale price¥3,980

[Option] Laser engraving of characters and symbols Sale price¥4,000
モルガナイト1石（オーバルカット,5×7mm）《4月新誕生石》

Morganite 1 stone (oval cut, 5 x 7mm)《New birthstone for April》《Discount available for multiple purchases》 Sale price¥3,980
グリーンダイヤモンド（トリートメント）1石（約1.3mm)

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580
ベリリウム拡散処理サファイア1石（約2.5mm,ラウンドカット）

1 beryllium diffused sapphire stone (approximately 2.5mm, round cut)《Multiple purchase discounts available》 Sale price¥1,580
H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥3,980

Additional charges (ring size) Sale price¥1,000
合成モアッサナイト1石ルース（ミントグリーン,オーバルカット,6×4mm)

Synthetic moissanite 1 stone loose (mint green, oval cut, 6 x 4 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
合成モアッサナイト1石ルース（ミントグリーン,ペアシェイプカット,5×7mm)

Synthetic moissanite 1 stone loose (mint green, pear shape cut, 5 x 7 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
H&C（ハート&キューピッド）専用スコープ（ダイヤモンド 専用スコープ) - カラッツSTORE

[Jeweler's Tools] H&C (Heart & Cupid) Special Scope (Diamond Special Scope) Sale price¥1,580
Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available}

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980
宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：ホワイトラブラドライト）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: white labradorite) Sale price¥3,980
1 green spodumene rough stone (average 15ct)《Multiple purchase discount available》

1 green spodumene rough stone (average 15ct)《Multiple purchase discount available》 Sale price¥3,980
宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（初心者向け：フローライト・アパタイト2石セット）

Let's try gem polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite/apatite 2 stone set) Sale price¥2,980
Diamond loose sorting transition fee

Diamond loose sorting transition fee Sale price¥3,000
【宝石商の道具】冷却ヒビ入れ染色クォーツ色違い2石セット - カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz Set of 2 Stones in Different Colors (Discount available for multiple purchases) Sale price¥2,980
Petalite 1 stone loose (6mm, round cut)《Multiple purchase discount available》

Petalite 1 stone loose (6mm, round cut)《Multiple purchase discount available》 Sale price¥2,580
宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：アンデシン）

Let's try gem polishing "Do-it-yourself rough stone polishing set" (for intermediate users: Andesine) Sale price¥2,980
Additional charges page

Additional charges page Sale price¥3,000
Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set)

Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set) Sale price¥2,980
Let's try polishing gemstones with the "Do-it-yourself gemstone polishing kit" (for beginners: green apatite)

Let's try polishing gemstones with the "Do-it-yourself gemstone polishing kit" (for beginners: green apatite) Sale price¥2,980
1 stone of green opal from South Africa (discount available for multiple purchases)

1 stone of green opal from South Africa (discount available for multiple purchases) Sale priceFrom ¥2,980
ピンクオパール・ブルーオパール2石セット（小・大サイズ） - KARATZ STORE｜カラッツSTORE

Pink opal/blue opal 2 stone set (small/large size)《Discount available for multiple purchases》 Sale priceFrom ¥1,980
リングサイズ直し追加料金 - KARATZ STORE｜カラッツSTORE

Additional charge for resizing Sale price¥750
[Jeweler's Tools] Color change penlight loose set

[Jeweler's Tools] Color change penlight loose set Sale price¥4,980
【宝石商の道具】ペンライト（原石向け）・原石2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Penlight (for rough stones), 2-piece set of rough stones Sale price¥4,980

Additional charge for resizing: 750 yen Sale price¥750

Additional charge for resizing: 1,500 yen Sale price¥1,500

Additional charge for resizing: 2,500 yen Sale price¥2,500

Alteration fee + ¥4,000 Sale price¥4,000

Additional charge for resizing: +3,000 yen Sale price¥3,000

Additional charge for resizing: 4,500 yen Sale price¥4,500

Additional fee: +1,000 yen Sale price¥1,000
coming soon Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》 Sale price¥3,980
coming soon 【9/22 22時販売】《限定11石》通常22,800円のブラジル産非加熱シェリーカラー含むインペリアルトパーズ1石（ロンドンブルートパーズ1石付き）《複数購入割引有》　

【9/22 22時販売】《限定11石》通常22,800円のブラジル産非加熱シェリーカラー含むインペリアルトパーズ1石（ロンドンブルートパーズ1石付き）《複数購入割引有》　 Sale price¥4,980
Sold out 【9/18 22時販売】《限定8石》スリランカ産サファイア1石ルース（ペアシェイプカット,平均0.25ct）《複数購入割引有》

【9/18 22時販売】《限定8石》スリランカ産サファイア1石ルース（ペアシェイプカット,平均0.25ct）《複数購入割引有》
Sold out 《Limited to 5 stones》Garnet (KEN Cut, 3.4-3.7mm)《Multiple purchase discount available》

《Limited to 5 stones》Garnet (KEN Cut, 3.4-3.7mm)《Multiple purchase discount available》
Sold out 【9/12 22時販売】《限定10石》通常32800円のトップカラーのベニトアイトやサンジェ氏ブルージルコン含むファイアが綺麗な宝石ガチャ《複数購入割引有》

【9/12 22時販売】《限定10石》通常32800円のトップカラーのベニトアイトやサンジェ氏ブルージルコン含むファイアが綺麗な宝石ガチャ《複数購入割引有》
Sold out 【9/7 22時販売】《限定12石》通常59,800円の鑑別書付きピジョンブラッドルビーやスタールビーを含むルビーガチャ《複数購入割引有》

【9/7 22時販売】《限定12石》通常59,800円の鑑別書付きピジョンブラッドルビーやスタールビーを含むルビーガチャ《複数購入割引有》
Sold out 【9/4 22時販売】《限定13石》通常59,800円の14mmダンデライオンカットアメトリン・29,800円の甲州貴石切子シトリンの熟練職人ガチャ《複数購入割引有》

【9/4 22時販売】《限定13石》通常59,800円の14mmダンデライオンカットアメトリン・29,800円の甲州貴石切子シトリンの熟練職人ガチャ《複数購入割引有》
Sold out オイルインクォーツ 0.339ctルース

【9/6 22時販売】パキスタン産オイルインクォーツ 0.339ctルース
Sold out 《限定10石》通常49,800円の2.5ctブラジル産アクアマリン鑑付含む濃いめアクアマリンガチャ《複数購入割引有》

《限定10石》通常49,800円の2.5ctブラジル産アクアマリン鑑付含む濃いめアクアマリンガチャ《複数購入割引有》
Sold out 【8/29 22時販売】《限定13石》通常59800円の甲州貴石切子パープルスキャポライト含むパープルスキャポライト（さらにサンジェ氏タンザナイト1石付き）《複数購入割引有》

【8/29 22時販売】《限定13石》通常59800円の甲州貴石切子パープルスキャポライト含むパープルスキャポライト（さらにサンジェ氏タンザナイト1石付き）《複数購入割引有》
Sold out [8/ 10 PM Sale] Amethyst Gacha Featuring Dandelion Cut Gemstones by Shimizu Kisaki - 12 Limited Pieces Available! (Multiple Purchase Discount)

[8/ 10 PM Sale] Amethyst Gacha Featuring Dandelion Cut Gemstones by Shimizu Kisaki - 12 Limited Pieces Available! (Multiple Purchase Discount)
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
coming soon Limited to 2 stones: 1 Brazilian Madeira citrine loose stone (round cut, 5.5mm) Multiple purchase discounts available

Limited to 2 stones: 1 Brazilian Madeira citrine loose stone (round cut, 5.5mm) Multiple purchase discounts available Sale price¥3,980
Sold out [On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]
Sold out [On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]

[On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

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 Books

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.