Ruth

Labradorite 1 stone (spherical, 6mm) loose (multiple purchase discount available) Sale price¥2,980

Gem Gacha💎 Sri Lankan Sapphire《Ratnapura》1 loose stone (average 0.75ct)《Multiple purchase discount available》 Sale price¥5,980

コロンビア産エメラルドキャッツアイ1石ルース（平均0.35ct)《初めての方向け》

Colombian emerald cat's eye 1 stone loose (average 0.35ct)《For first-time users》《Multiple purchase discount available》 Sale price¥12,800

Kyanite raw stone/loose 2 stone set《Multiple purchase discount available》 Sale price¥2,980

【さくらインカット】トルマリン 9mm/5.590ctルース《コラボ》ワッペン付日独鑑

[Dandelion cut] Tourmaline 11mm/5.620ct loose "Collaboration" with emblem Japanese-German edition Sale price¥79,800

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） 1.707ctルース

Pyrope spessartine garnet (color change garnet) 1.707ct loose Sale price¥45,800

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） 1.297ctルース

Pyrope spessartine garnet (color change garnet) 1.297ct loose Sale price¥39,800

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） 1.234ctルース

Pyrope spessartine garnet (color change garnet) 1.234ct loose Sale price¥35,800

Pyrope spessartine garnet (color change garnet) 1 stone loose (multiple purchase discount available) Sale price¥5,980

[Konpeito] Iolite 3.170ct loose Sale price¥27,800

Synthetic black moissanite (black moissanite) 1 stone loose (2.5mm, round cut)《Multiple purchase discount available》 Sale price¥2,980

1 stone loose spinel from Myanmar (Pentagonal cut)《Discount available for multiple purchases》 Sale price¥3,980

Rose quartz 8.640ct loose Sale price¥3,980

Pink opal 7.180ct loose Sale price¥8,800

Andalusite 5mm/0.480ct loose Sale price¥5,980

ピンクダイヤモンド 0.191ctルース(VERY LIGHT ORANGY PINK, SI2)

Pink diamond 0.191ct loose (VERY LIGHT ORANGY PINK, SI2) Sale price¥59,800

【宝石商の道具】ダイヤルゲージ（ルースやビーズの計測）・ルース（ピラミッドカット）セット

[Jeweler's Tools] Dial Gauge (Measuring Loose and Beads) Loose (Pyramid Cut) Set Sale price¥3,980

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} Sale price¥3,980

Synthetic moissanite 1 stone loose (mint green, oval cut, 6 x 4 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980

Synthetic moissanite 1 stone loose (mint green, pear shape cut, 5 x 7 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980

Princess cut diamond 2.0mm loose (equivalent to VS class)《Multiple purchase discount available》 Sale price¥8,800

H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980

Hollandite in quartz 7.300ct loose Sale price¥25,800

Brazilian alexandrite (average 0.12ct) loose (multiple purchase discount available) Sale price¥19,800

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

1 stone loose pink spinel (princess cut, approx. 2.5mm)《Discount available for multiple purchases》 Sale price¥2,980

Diamond loose sorting transition fee Sale price¥3,000

Petalite 1 stone loose (6mm, round cut)《Multiple purchase discount available》 Sale price¥2,580

Scapolite Cat's Eye 8.880ct Loose Sale price¥8,800

Bicolor spinel 1.17ct loose Sale price¥79,800

Cambodian Blue Zircon (Ratanakiri Blue) 23.12ct Loose Sale price¥498,000

Orange Scapolite 5.57ct loose Sale price¥19,800

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

Diamond loose/certificate transfer fee Sale price¥5,000

[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] 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 Sale price¥5,980

coming soon

【12560357掲載】ジンバブエ産バイカラーユークレース 0.352ctルース

【10/5 22時販売】ジンバブエ産バイカラーユークレース 0.352ctルース Sale price¥79,800

coming soon

【12558125掲載】ブラジル産フローライトインクォーツ 3.507ctルース

【10/5 22時販売】ブラジル産フローライトインクォーツ 3.507ctルース Sale price¥22,800

coming soon

【10/5 22時販売】ブラジル産アクアマリン 8.858ctルース Sale price¥198,000

coming soon

【10/5 22時販売】《限定9石》全石鑑別書付・ゾイサイト1石ルース（イエロー、ピンクブラウン、グリーンなど）《複数購入割引有》 Sale price¥6,980

Sold out

Tinker Bell Quartz (Pink Fire Quartz) 5.001ct loose

【10/4 22時販売】《限定17石》タンザニア産バイカラーサファイア1石ルース《複数購入割引有》 Sale price¥4,580

Sold out

【9/28 22時販売】ブラジル産エレスチャルアメジスト 1.058ctルース

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【9/28 22時販売】アメリカ産ネプチュナイト 0.143ctルース

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【9/26 22時販売】《限定1セット》ベニトアイトグラデーション6石セット（2.0mm,ラウンドカット,トップクオリティ含む）ルース

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.