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Synthetic Alexandrite 0.578ct loose stone

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800
Synthetic Alexandrite 0.841ct loose stone

Synthetic Alexandrite 0.841ct loose stone Sale price¥15,800
[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top

[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top Sale price¥16,800
Pt900合成アレキサンドライト0.41ct・ダイヤモンド0.54ctリング 鑑別書

[Lottery Sale 0812_08] Pt900 Synthetic Alexandrite and 0.54ct Diamond Ring with Certificate Sale price¥128,000
合成アレキサンドライト 1.409ctルース

[#202607 Akihabara Pop-up Store - Currently Removed] [Shinjuku Marui Annex 202605 - Currently Removed] [12559525 Listed] Synthetic Alexandrite 1.409ct Loose Stone Sale price¥39,800
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone

【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone Sale price¥39,800
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
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
Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》

Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》 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
Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available.

Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available. Sale price¥4,980
Limited to 8 stones: 1 loose synthetic alexandrite (custom cut by Mr. Sanjay, shield cut, octagonal cut, etc.) Discounts available for multiple purchases

Limited to 8 stones: 1 loose synthetic alexandrite (custom cut by Mr. Sanjay, shield cut, octagonal cut, etc.) Discounts available for multiple purchases Sale price¥6,980
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
[Limited to 4 stones] Synthetic moissanite 1 stone loose (rose cut, 5.0mm) [Discount available for multiple purchases]

[Limited to 4 stones] Synthetic moissanite 1 stone loose (rose cut, 5.0mm) [Discount available for multiple purchases] Sale price¥6,980
Synthetic Alexandrite 0.287ct loose stone

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
合成モアッサナイト 0.678ctルース

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥8,800
合成モアッサナイト 0.634ctルース

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800
合成アレキサンドライト 1.381ctルース

Synthetic Alexandrite, 1.381ct Loose Sale price¥25,800
合成アレキサンドライト 1.076ctルース

Synthetic Alexandrite 1.076ct Loose Stone Sale price¥25,800
合成モアッサナイト 8.679ctルース

Synthetic Moissanite 8.679ct loose stone Sale price¥29,800
合成アレキサンドライト 0.379ctルース

Synthetic alexandrite 4.3mm/0.379ct loose stone Sale price¥9,800
合成アレキサンドライト 0.885ctルース

Synthetic Alexandrite 0.885ct Loose Sale price¥18,800
合成アレキサンドライト 0.979ctルース

Synthetic Alexandrite Loose Stone 5.8mm/0.979ct Sale price¥22,800
合成アレキサンドライト 1.241ctルース

Synthetic Alexandrite 1.241ct Loose Stone Sale price¥25,800
合成アレキサンドライト 0.808ctルース

Synthetic Alexandrite 0.808ct Loose Sale price¥18,800
合成アレキサンドライト 0.414ctルース

Synthetic Alexandrite 0.414ct Loose Sale price¥12,800
Pt900 合成ルビー 1.61ct リング

[Calafuri] Pt900 Synthetic Ruby 1.61ct, Diamond 0.25ct Ring with Central Gem Lab Sale price¥98,000
K18 合成オパール ペンダントトップ（ネックレストップ）鑑別書

[Calafuri] K18 Synthetic Opal Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥39,800
Pt900/K18 合成オパール 3.25ct ペンダントトップ（ネックレストップ）

[COLORFUL] Pt900/K18 Cresanbert/Kyocera Synthetic Opal 3.25ct Diamond 0.25ct Pendant Top Sale price¥69,800
合成モアッサナイト 7.999ctルース

Synthetic Moissanite 7.999ct loose stone Sale price¥29,800
合成モアッサナイト 8.417ctルース

Synthetic Moissanite 8.417ct Loose Stone Sale price¥39,800
合成モアッサナイト 8.931ctルース

Synthetic Moissanite 8.931ct loose stone Sale price¥45,800
合成モアッサナイト 4.924ctルース

Synthetic Moissanite 4.924ct loose stone Sale price¥29,800
Synthetic Alexandrite 4.3mm/0.430ct Loose Stone

Synthetic Alexandrite 4.3mm/0.430ct Loose Stone Sale price¥12,800
Synthetic Blue Sapphire 1.551ct Loose Stone (Synthetic Sapphire)

Synthetic Blue Sapphire 1.551ct Loose Stone (Synthetic Sapphire) Sale price¥15,800
Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire)

Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire) Sale price¥25,800
Synthetic Alexandrite 0.338ct loose stone

Synthetic Alexandrite 0.338ct loose stone Sale price¥12,800
合成モアッサナイト（グレーブルー） 1.701ctルース

Synthetic moissanite (gray blue) 1.701ct loose Sale price¥12,800
1.547ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

1.547ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire) Sale price¥9,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)

Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire) Sale price¥14,800
Synthetic Moissanite 0.632ct loose stone (tie cut)

Synthetic Moissanite 0.632ct loose stone (tie cut) Sale price¥3,980
Synthetic Moissanite 0.509ct loose stone (tie cut)

Synthetic Moissanite 0.509ct loose stone (tie cut) Sale price¥3,980
合成アレキサンドライト 0.827ctルース

Synthetic Alexandrite 5.7mm/0.827ct Loose Stone Sale price¥19,800
【サンジェ氏】合成モアッサナイト 0.714ctルース

Synthetic Moissanite 0.714ct loose stone Sale price¥6,980
合成モアッサナイト 0.491ctルース

Synthetic Moissanite 0.491ct loose stone Sale price¥4,980
合成モアッサナイト 0.245ctルース

Synthetic moissanite 0.245ct loose (shield cut) Sale price¥6,980
【サンジェ氏】合成モアッサナイト 13mm/8.154ctルース

Synthetic Moissanite 13mm/8.154ct Loose Stone Sale price¥39,800
【サンジェ氏】合成モアッサナイト 8.950ctルース

Synthetic Moissanite 13.5mm/8.950ct Loose Sale price¥39,800

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.