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Sold out [12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone

[12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

[Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

[Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose

[Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.201ct Loose

[Sakura Shape] Oregon Sunstone from the United States, 1.201ct Loose

Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.104ct Loose

[Sakura Shape] Oregon Sunstone from the United States, 1.104ct Loose

Sold out Sri Lankan blue sapphire 0.645ct loose stone

Sri Lankan blue sapphire 0.645ct loose stone
Sold out ミャンマー産スピネルインマーブル 39.231ctルース

Myanmar spinel in marble 39.231ct loose stone

Sold out Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose

Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose
Sold out Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose

Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out Madagascar Sapphire 4.6mm/0.472ct Loose

Madagascar Sapphire 4.6mm/0.472ct Loose
Sold out Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose

Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose
Sold out パキスタン産カラーチェンジスフェーン 7.137ctルース

Color change sphene from Pakistan 7.137ct loose
Sold out オレゴンサンストーン 1.157ctルース

Oregon Sunstone 1.157ct loose
Sold out 【サンジェ氏】パープルスピネル 0.995ctルース

Purple spinel 0.995ct loose stone
Sold out ジルコン 0.416ctルース

Zircon 0.416ct loose
Sold out 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out 2.077ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)

2.077ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out Synthetic sapphire 1.416ct loose stone (synthetic pink sapphire)

Synthetic sapphire 1.416ct loose stone (synthetic pink sapphire)
Sold out Synthetic spinel 1.793ct loose stone

Synthetic spinel 1.793ct loose stone
Sold out Synthetic cobalt spinel 1.886ct loose stone

Synthetic cobalt spinel 1.886ct loose stone
Sold out Spinel 0.310ct loose

Spinel 0.310ct loose
Sold out ブラックスターサファイア 1.410ctルース

[12/5 22:00 Sale] Black Star Sapphire 1.410ct Loose
Sold out [Available at 10 PM on December 5th] 18K Yellow Gold Burmese Pink Spinel 3.9mm/0.276ct Hot Pink Spinel Ring

[Available at 10 PM on December 5th] 18K Yellow Gold Burmese Pink Spinel 3.9mm/0.276ct Hot Pink Spinel Ring
Sold out 【サンジェ氏】ブルージルコン 0.322ctルース

Blue zircon 0.322ct loose stone
Sold out ピンクスピネル 0.409ctルース

Pink spinel 0.409ct loose
Sold out スリランカ産非加熱スターサファイア 2.094ctルース

Sri Lankan star sapphire 2.094ct loose
Sold out マダガスカル産ホットピンクサファイア 1.120ctルース

Madagascar Hot Pink Sapphire 1.120ct Loose GIA
Sold out 【KEN氏】オレゴンサンストーン 1.333ctルース

Oregon Sunstone 1.333ct Loose
Sold out カンボジア産ブルージルコン（ラタナキリブルー） 2.143ctルース

Cambodian blue zircon (Ratanakiri blue) 2.143ct loose

Sold out グリーンサファイア 0.518ctルース

Green sapphire 0.518ct loose (teal green)
Sold out カラーチェンジサファイア 0.946ctルース

Color change sapphire 0.946ct loose
Sold out バイカラーゾイサイト 1.497ct原石

[12543391 published] Bicolor Zoisite 1.497ct rough stone
Sold out グリーンランド産サファイア 0.271ctルース

Greenland sapphire 0.271ct loose stone with certificate
Sold out タンザニア産バイカラーサファイア 0.380ctルース

Tanzanian Bicolor Sapphire 0.380ct Loose (Teal Color)
Sold out スリランカ産ブルーサファイア（アイスブルー） 0.300ctルース

Sri Lankan Blue Sapphire (Ice Blue) 0.300ct Loose
Sold out Sri Lankan Purple Sapphire 0.393ct Loose Stone with Certificate of Authenticity

Sri Lankan Purple Sapphire 0.393ct Loose Stone with Certificate of Authenticity
Sold out ブルーサファイア 1.095ctルース

1.095ct loose blue sapphire
Sold out インド産アイオライトサンストーン 0.745ctルース

Indian Iolite Sunstone 0.745ct Loose Stone
Sold out インド産アイオライトサンストーン 0.769ctルース

Indian Iolite Sunstone 0.769ct Loose Stone
Sold out インド産アイオライトサンストーン 0.540ctルース

Indian Iolite Sunstone 0.540ct Loose Stone
Sold out タンザニア産バイカラーサファイア 0.343ctルース

Tanzanian bicolor sapphire 0.343ct loose stone
Sold out Sapphire from Madagascar 4.5mm/0.414ct loose

Sapphire from Madagascar 4.5mm/0.414ct loose
Sold out モザンビーク産ピンクサファイア 0.213ctルース（ホットピンクサファイア）

Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sold out スリランカ産グリーンジルコン 0.734ctルース

Sri Lankan green zircon 0.734ct loose stone
Sold out タンザニア産バイカラーサファイア 1.002ctルース

[12544901 published] Bicolor sapphire 1.000ct loose
Sold out マダガスカル産バイカラーサファイア 1.341ctルース

[12544897 published] Bicolor sapphire 1.341ct loose
Sold out タンザニア産ピンクサファイア 0.566ctルース

[12544896 published] Sapphire 0.566ct 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.