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合成モアッサナイト（グレー） 2.126ctルース

Synthetic Moissanite (Grey) 8.5mm/2.126ct Loose Stone Sale price¥18,800
合成モアッサナイト 0.648ctルース

Synthetic Moissanite 5.9mm/0.648ct Loose Stone Sale price¥9,800
合成モアッサナイト 0.651ctルース

Synthetic Moissanite 5.9mm/0.651ct Loose Stone Sale price¥9,800
合成アレキサンドライト 0.330ctルース

Synthetic Alexandrite 0.330ct loose stone Sale price¥9,800
合成アレキサンドライト 0.502ctルース

Synthetic Alexandrite 0.502ct loose stone Sale price¥15,800
合成アレキサンドライト 0.282ctルース

Synthetic Alexandrite 0.282ct loose stone Sale price¥9,800
合成ブラックオパール 1.467ctルース

Synthetic Opal (Synthetic Black Opal) 1.467ct Loose Sale price¥12,800
合成ブラックオパール 10.910ctルース

Synthetic Opal (Synthetic Black Opal) 10.910ct Loose Sale price¥69,800
合成ブラックオパール 1.532ctルース

Synthetic Opal (Synthetic Black Opal) 1.532ct Loose Sale price¥15,800
【12555991掲載】合成オパール 0.723ctルース

Synthetic Opal (Synthetic Black Opal) 0.723ct Loose Sale price¥15,800
【12555989掲載】合成オパール 0.651ctルース

Synthetic Opal (Synthetic Black Opal) 0.651ct Loose Sale price¥15,800
合成アレキサンドライト 0.578ctルース

Synthetic Alexandrite 0.578ct loose stone Sale price¥12,800
合成アレキサンドライト 0.841ctルース

Synthetic Alexandrite 0.841ct loose stone Sale price¥15,800
合成アレキサンドライト 0.287ctルース

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
合成アレキサンドライト 0.287ctルース

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
合成アレキサンドライト 0.471ctルース

Synthetic Alexandrite 0.471ct loose stone Sale price¥14,800
合成モアッサナイト 0.678ctルース

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥9,800
合成モアッサナイト 0.682ctルース

Synthetic Moissanite 5.8mm/0.682ct Loose Stone Sale price¥9,800
合成モアッサナイト 0.634ctルース

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800
合成オパール 1.804ctルース

Synthetic Opal 1.804ct Loose Sale price¥14,800
合成モアッサナイト 8.679ctルース

Synthetic Moissanite 8.679ct loose stone Sale price¥39,800
[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
合成モアッサナイト 0.372ctルース

Synthetic moissanite 0.372ct loose Sale price¥9,800
Sold out アイスブルーカラーの合成モアッサナイト1石ルース（5mm,アイスブルー）

Ice blue color synthetic moissanite 1 stone loose (5mm, ice blue)《Multiple purchase discount available》

Sold out Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}
Sold out Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Sold out Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available

Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available
Sold out 合成モアッサナイト 0.970ctルース

Synthetic Moissanite 0.970ct Loose Stone (Blue Moissanite)
Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

[Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

Sold out [On sale at 10 PM on February 1st] Synthetic Alexandrite 2.046ct Loose Stone

[On sale at 10 PM on February 1st] Synthetic Alexandrite 2.046ct Loose Stone
Sold out [On Sale at 10 PM on January 3rd] 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

[On Sale at 10 PM on January 3rd] 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out [1/2 22:00 Sale] Synthetic Sapphire 1.416ct Loose (Synthetic Pink Sapphire)

[1/2 22:00 Sale] Synthetic Sapphire 1.416ct Loose (Synthetic Pink Sapphire)
Sold out 合成オパール 6.1mm/0.792ctルース（ローズカット） (ローズカット)

Synthetic Opal 6.1mm/0.792ct Loose Stone (Rose Cut)
Sold out 合成モアッサナイト 6.704ctルース

Synthetic moissanite 6.704ct loose
Sold out ラボグロウンダイヤモンド（合成ダイヤモンド） 0.290ctルース(FANCY VIVID PINK, VS-2)

Lab-grown Diamond (Synthetic Diamond) 0.290ct Loose (FANCY VIVID PINK, VS-2)

Sold out 合成アレキサンドライト 1.538ctルース

Synthetic Alexandrite 1.538ct Loose Stone
Sold out Synthetic Blue Moissanite 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}

Synthetic Blue Moissanite 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}

Sold out 合成アレキサンドライト 1.552ctルース

[25.06CP] Synthetic Alexandrite 1.552ct Loose Stone
Sold out 【さくらシェイプ】合成サファイア 8.533ctルース

[Sakura Shape] Synthetic Sapphire 8.533ct Loose
Sold out 合成アレキサンドライト 0.561ctルース

Synthetic Alexandrite 0.561ct loose stone
Sold out 合成アレキサンドライト 0.514ctルース

Synthetic Alexandrite 0.514ct loose stone
Sold out 合成アレキサンドライト 0.472ctルース

Synthetic Alexandrite 0.472ct loose stone
Sold out 合成アレキサンドライト 0.445ctルース

Synthetic Alexandrite 0.445ct loose stone
Sold out 合成アレキサンドライト 0.411ctルース

Synthetic Alexandrite 0.411ct loose stone
Sold out 合成モアッサナイト 0.370ctルース

Synthetic Moissanite 5.0mm/0.370ct Loose Stone (Rose Cut)

Sold out 合成モアッサナイト 6.579ctルース

Synthetic Moissanite 12.5mm/6.579ct Loose Stone
Sold out 合成モアッサナイト 10mm/4.121ctルース

Synthetic Moissanite 10mm/4.121ct Loose Stone (Portuguese Cut)
Sold out 合成オパール 1.914ctルース

Synthetic Opal 1.914ct 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.