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ブルースピネル 1.949ctルース

Blue spinel 1.949ct loose Sale price¥29,800
ラベンダースピネル 0.305ctルース

Lavender spinel 0.305ct loose Sale price¥7,980
ブラジル産アレキサンドライト 0.074ctルース（ヘマチタ鉱山）

Brazilian Alexandrite 0.074ct Ruth (Hemachita Mine) Sale price¥15,800
ブラジル産アレキサンドライト 0.086ctルース（ヘマチタ鉱山）

Brazilian Alexandrite 0.086ct Ruth (Hemachita Mine) Sale price¥18,800
イギリス産ロジャリーフローライト 4.738ctルース

British Rosary Fluorite 4.738ct loose Sale price¥9,800
イギリス産ロジャリーフローライト 1.841ctルース

British Rosary Fluorite 1.841ct loose Sale price¥5,980
Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]

Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,580
コロンビア産エメラルド ルース・原石2石セット（ラウンドカット3mm）

Colombian emerald loose rough stone set of 2 stones (round cut 3mm)《Multiple purchase discount available》 Sale price¥6,980
タンザナイト原石・ルース2石セット（シュガーローフカット）

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980
コーネルピンキャッツアイ 0.513ctルース

Cornel pin cat's eye 0.513ct loose Sale price¥6,980
コーネルピンキャッツアイ 0.872ctルース

Cornel pin cat's eye 0.872ct loose Sale price¥6,980
タンザナイト 1.360ctルース

Tanzanite 1.360ct loose stone Sale price¥49,800
ラブラドライト1石（球体,6mm）ルース

Labradorite 1 stone (spherical, 6mm) loose (multiple purchase discount available) Sale price¥2,980
スリランカ産サファイア《ラトゥナプラ》1石ルース(平均0.75ct)

Gem Gacha💎 Sri Lankan Sapphire《Ratnapura》1 loose stone (average 0.75ct)《Multiple purchase discount available》 Sale price¥5,980
カイヤナイト 原石・ルース2石セット

Kyanite raw stone/loose 2 stone set《Multiple purchase discount available》 Sale price¥2,980
パイロープ・スペサルティンガーネット（カラーチェンジガーネット）1石 ルース

Pyrope spessartine garnet (color change garnet) 1 stone loose (multiple purchase discount available) Sale price¥5,980
合成ブラックモアッサナイト（ブラックモアサナイト）1石ルース《バンコク買付品》

Synthetic black moissanite (black moissanite) 1 stone loose (2.5mm, round cut)《Multiple purchase discount available》 Sale price¥2,980
ビルマ産スピネル1石ルース（ペンタゴナルカット）《バンコク買付品》

1 stone loose spinel from Myanmar (Pentagonal cut)《Discount available for multiple purchases》 Sale price¥3,980
ダイヤモンド 0.348ctルース(I, SI1)

Diamond 0.348ct loose (I, SI1) Sale price¥59,800
【12530283掲載】カンテラオパール 17.221ctルース

Cantera opal 17.221ct loose Sale price¥25,800
シーブルーカルセドニー 6.964ctルース

Sea blue chalcedony 6.964ct loose Sale price¥7,980
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
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 (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
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
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
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
[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
Diamond loose/certificate transfer fee

Diamond loose/certificate transfer fee Sale price¥6,600
[Jeweler's Tools] Color change penlight loose set

[Jeweler's Tools] Color change penlight loose set Sale price¥4,980
イエローダイヤモンド 0.190ctルース(FANCY DEEP ORANGY YELLOW, SI2) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.190ct loose (FANCY DEEP ORANGY YELLOW, SI2) Sale price¥39,800
[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones

[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones Sale price¥6,980
[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
Sold out ケニア産ツァボライト 0.505ctルース

[On sale June 4th at 10 PM] Kenyan Tsavorite 0.505ct Loose Stone
Sold out ケニア産ツァボライト 0.386ctルース

[On sale May 30th at 10 PM] Kenyan Tsavorite 4.1mm/0.386ct Loose Stone
Sold out タンザニア産タンザナイト 0.328ctルース

【On sale May 30th at 10 PM JST】Tanzanian Tanzanite 0.328ct Loose Stone
Sold out ブラジル産シーフォームトルマリン 0.347ctルース

[Sale on 6/6 at 10 PM JST] Brazilian Seafoam Tourmaline 0.347 ct Loose Gemstone
Sold out パパラチアサファイア 0.177ctルース DGL鑑

[On sale May 27th at 10 PM JST] Madagascar Paparadscha Sapphire 0.177ct Loose Stone DGL Certified
Sold out マダガスカル産パパラチアサファイア 0.517ctルース DGL鑑

Madagascar Padparadscha Sapphire 0.517ct Loose DGL Certified
Sold out ルビー 0.187ctルース

[Sale on 5/27 at 10 PM] Mozambique Ruby 0.187 ct Loose Stone with Gemstone Report

Sold out マダガスカル産バイカラースフェーン 4.494ctルース

Madagascar Bi-color Sphene 4.494ct Loose Stone

Sold out 高知県産血赤珊瑚 2.423ctルース

[Sales start 10:00 PM on June 8th] Kochi Prefecture Production Blood Red Coral Loose Stone 2.423ct
Sold out オパール 0.878ctルース

Ethiopian Opal 5.7mm/0.878ct Loose (Sphere)

Sold out モザンビーク産エルバイトトルマリン 1.793ctルース

Mozambique Elbaite Tourmaline 1.793ct Loose Stone

Sold out マダガスカル産バイカラーサファイア 0.296ctルース

Madagascar Bicolor Sapphire 0.296ct 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.