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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
プリンセスカットダイヤモンド 2.0mm ルース（VSクラス相当）

Princess cut diamond 2.0mm loose (equivalent to VS class)《Multiple purchase discount available》 Sale price¥8,800
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
H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980
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
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
1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》

1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》 Sale price¥4,980
【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
スキャポライトキャッツアイ 8.880ctルース

Scapolite Cat's Eye 8.880ct Loose Sale price¥8,800
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
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
[Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry)

[Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry) Sale price¥3,980
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
Diamond loose/certificate transfer fee

Diamond loose/certificate transfer fee Sale price¥5,000
[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
[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980
[Jeweler's Tools] White penlight (for loose), loose 3-piece set

[Jeweler's Tools] White penlight (for loose), loose 3-piece set Sale price¥5,980

Repair cost + 2,500 yen Sale price¥2,500
coming soon 【9/13 22時販売】《限定10石》カラーチェンジガチャ1石（ミャンマー産カラーチェンジジルコン、カラーシフトサファイア、2.2ctのカラーチェンジガーネットなど）《複数購入割引有》

【9/13 22時販売】《限定10石》カラーチェンジガチャ1石（ミャンマー産カラーチェンジジルコン、カラーシフトサファイア、2.2ctのカラーチェンジガーネットなど）《複数購入割引有》 Sale price¥6,980
coming soon 【10/13 22時販売】《限定8石》ブラジル産デンドリティッククォーツの子猫カット1石ルース（初心者向け）（5mm）《複数購入割引有》

【10/13 22時販売】《限定8石》ブラジル産デンドリティッククォーツの子猫カット1石ルース（初心者向け）（5mm）《複数購入割引有》 Sale price¥3,980
coming soon 【10/12 22時販売】《限定3石》ミャンマー産グレースピネル・プラチナスピネル（4.0mm,ラウンドカット）1石ルース《複数購入割引有》

【10/12 22時販売】《限定3石》ミャンマー産グレースピネル・プラチナスピネル（4.0mm,ラウンドカット）1石ルース《複数購入割引有》 Sale price¥5,980
coming soon 【10/12 22時販売】《数量限定》ミャンマー産グレースピネル・プラチナスピネル（2.0mm,ラウンドカット）1石ルース《複数購入割引有》

【10/12 22時販売】《数量限定》ミャンマー産グレースピネル・プラチナスピネル（2.0mm,ラウンドカット）1石ルース《複数購入割引有》 Sale price¥4,980
coming soon 【10/12 22時販売】《限定5石》グリーンランド産ルビー1石ルース（約2.3mm,トップカラー,証明書付）《複数購入割引有》

【10/12 22時販売】《限定5石》グリーンランド産ルビー1石ルース（約2.3mm,トップカラー,証明書付）《複数購入割引有》 Sale price¥5,980
coming soon 【10/12 22時販売】《限定8石》ミニカイトカット1石ルース（パライバトルマリン2石含む、グリーンベリル、ルビー、ペリドットなど）《複数購入割引有》

【10/12 22時販売】《限定8石》ミニカイトカット1石ルース（パライバトルマリン2石含む、グリーンベリル、ルビー、ペリドットなど）《複数購入割引有》 Sale price¥2,980
coming soon 【9/12 22時販売】《限定7石》ロシア産ノンオイルエメラルド1石ルース(1.5-1.6ｍｍ,ステップカット)《複数購入割引有》

【9/12 22時販売】《限定7石》ロシア産ノンオイルエメラルド1石ルース(1.5-1.6ｍｍ,ステップカット)《複数購入割引有》 Sale price¥5,980
coming soon 【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》

【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》 Sale price¥7,980
coming soon [10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose

[10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose Sale price¥8,800
Sold out [On Sale 10/10 at 10 PM] [Limited to 20 stones] Koshu Precious Stone Kiriko Plus Three: Includes two carefully cut Oregon Sunstones in the Loose Stone Gacha [Multiple purchase discounts available]

[On Sale 10/10 at 10 PM] [Limited to 20 stones] Koshu Precious Stone Kiriko Plus Three: Includes two carefully cut Oregon Sunstones in the Loose Stone Gacha [Multiple purchase discounts available]
Sold out [On Sale 10/4 at 10 PM] Limited to 3 Stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) [Multiple Purchase Discounts Available]

[On Sale 10/4 at 10 PM] Limited to 3 Stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) [Multiple Purchase Discounts Available]
Sold out [On Sale 10/11 at 10 PM] [Limited to 18 stones] Brazilian Paraiba Tourmaline (Cabochon Cut, Approx. 2.2mm) Loose Stone [Multiple Purchase Discounts Available]

[On Sale 10/11 at 10 PM] [Limited to 18 stones] Brazilian Paraiba Tourmaline (Cabochon Cut, Approx. 2.2mm) Loose Stone [Multiple Purchase Discounts Available]
Sold out ティンカーベルクォーツ（ピンクファイヤークォーツ） 5.001ctルース

Tinker Bell Quartz (Pink Fire Quartz) 5.001ct loose
Sold out UVタイプミントガーネット 0.435ctルース

UV type mint garnet 0.435ct loose

Sold out ブラジル産レインボースキャポライト 0.652ctルース

Brazilian rainbow scapolite 6mm/0.652ct loose
Sold out ブラジル産メデューサクォーツ（パライバクォーツ） 2.248ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 2.248ct loose
Sold out コンゴ産ヘミモルファイト 0.537ctルース

Hemimorphite from Congo 0.537ct loose

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.