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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
アパタイト1石ルース（ブリオレットカット,約4×5mm）

Apatite 1 stone loose (briolette cut, approx. 4 x 5 mm)《Multiple purchase discount available》 Sale price¥2,980
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
ピンクスピネル1

1 stone loose pink spinel (princess cut, approx. 2.5mm)《Discount available for multiple purchases》 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 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
Purple Chalcedony 1 stone《Discount available for multiple purchases》

Purple Chalcedony 1 stone《Discount available for multiple purchases》 Sale price¥3,980
Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount} Sale price¥2,580
Euperlite 1 stone approx. 10ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 10ct (Michigan, USA) {Multiple purchase discount} Sale price¥1,580
Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》 Sale price¥3,980
[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set

[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set Sale price¥2,980
Euperlite 1 stone approx. 25ct-35ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 25ct-35ct (Michigan, USA) {Multiple purchase discount} Sale price¥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
アパタイト原石 色違い2石セット

Apatite rough stone set of 2 stones in different colors《Discount available for multiple purchases》 Sale price¥2,980
【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: 2,250 yen Sale price¥2,250

Additional charge for resizing: 3,750 yen Sale price¥3,750

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

Repair cost + 2,500 yen Sale price¥2,500
coming soon 【11/29 22時販売】《限定20石》通常13万円のFANCY INTENSEのピンクダイヤモンド0.086ct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》

【11/29 22時販売】《限定20石》通常13万円のFANCY INTENSEのピンクダイヤモンド0.086ct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》 Sale price¥4,980
coming soon 【11/29 22時販売】《限定10石》3.2mm/F/VVS-1/EXCELLENT(H&C)含むダイヤモンドガチャ《複数購入割引有》

【11/29 22時販売】《限定10石》3.2mm/F/VVS-1/EXCELLENT(H&C)含むダイヤモンドガチャ《複数購入割引有》 Sale price¥3,980
Sold out [Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated acrylic plates (made to order)

[Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated acrylic plates (made to order)

Sold out [Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated merchandise featuring random hard cards (12 designs total) - Complete box

[Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated merchandise featuring random hard cards (12 designs total) - Complete box

Sold out [Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated clear postcard set

[Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated clear postcard set

Sold out [Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated merchandise featuring 3 acrylic keychains (2 types)

[Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated merchandise featuring 3 acrylic keychains (2 types)

Sold out [Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated glitter badges (2 types)

[Sales start at 10 PM on Friday, December 12th] TV anime "Tokyo Ghoul" x KARATZ collaboration second edition: Newly illustrated glitter badges (2 types)

Sold out 【KEN氏】ピンクトルマリン 4.0mm/0.300ctルース

Pink tourmaline 4.0mm/0.300ct loose stone
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)

Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out ミャンマー産トラピッチェルビー 0.152ct原石

Myanmar trapichel ruby ​​0.152ct rough stone
Sold out ミャンマー産トラピッチェルビー 0.261ct原石

Myanmar trapichel ruby ​​0.261ct rough stone
Sold out タンザニア産ピンクゾイサイト 1.581ct原石

[Posted 12543492] Pink Zoisite 1.581ct rough stone from Tanzania

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.