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coming soon イエローダイヤモンド2.6mmルース（VSクラス相当）

Yellow diamond 2.6mm loose (equivalent to VS class) Sale price¥12,800
Sold out ジルコン 2.219ctルース（結晶入り） 日独鑑

Zircon 2.219ct loose (with crystals) Japanese-German edition
coming soon ブラジル産パライバトルマリン 0.065ctルース （CuO:2.0%、MnO:2.6%）

Brazilian Paraiba tourmaline 0.065ct loose (CuO:2.0%, MnO:2.6%) Sale price¥22,800
Sold out タンザナイト 2.358ctルース

Tanzanite 2.358ct loose
coming soon [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose

[Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose Sale price¥59,800
coming soon アメリカ産ベニトアイト 0.157ctルース

American Benitoite 0.157ct loose stone Sale price¥98,000
coming soon 【12552511掲載】ピンクダイヤモンド 0.296ctルース

[12552511] Pink diamond 0.296ct loose stone Sale price¥188,000
coming soon パキスタン産ペリドット 0.649ctルース

[11/2 22:00] Pakistani Peridot 0.649ct Loose Stone Sale price¥9,800
Sold out ジンバブエ産バイカラーユークレース 0.206ctルース

Zimbabwean Bicolor Euclase 0.206ct Loose Stone
Sold out グレートルマリン 0.486ctルース 鑑別書

Grey Tourmaline 0.486ct Loose Stone with Certificate of Authenticity
coming soon 南アフリカ産ロードクロサイト 1.544ctルース

[Sakura Incut] South African Rhodochrosite 7.6mm/1.544ct Loose Stone by Nikkei Sale price¥158,000
Sold out アンダリュサイト 0.317ctルース

Spanish Andalusite 0.317ct loose stone
Sold out 中国産シンシャ（辰砂・シナバー） 1.162ctルース

[On Sale 11/24 10pm] Chinese Cinnabar 1.162ct Loose Stone with Certificate of Authenticity
coming soon スリランカ産クリソベリルキャッツアイ 1.340ctルース

Sri Lankan Chrysoberyl Cat's Eye 1.340ct Loose Stone Sale price¥8,800
coming soon 【12550983掲載】マダガスカル産ペツォッタイト 0.670ctルース

[12550983] Madagascar Pezzottaite 0.670ct loose stone Sale price¥188,000
coming soon 【12545297掲載】スリランカ産マルチスターガーネット 4.209ctルース

[Posted in 12545297] Multi-star garnet from Sri Lanka 4.209ct loose Sale price¥98,000
coming soon [12543545 published] Non-oil emerald 0.510ct loose

[12543545 published] Non-oil emerald 0.510ct loose Sale price¥498,000
coming soon [12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone

[12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone Sale price¥12,800
coming soon [12/14 22:00] Colombian Emerald Rough Stone 18.900ct (with Pyrite)

[12/14 22:00] Colombian Emerald Rough Stone 18.900ct (with Pyrite) Sale price¥25,800
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.467ct Loose Stone

[12/13 22:00 Sale] Tanzanite from Tanzania 0.467ct Loose Stone Sale price¥9,800
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.436ct Loose Stone

[12/13 22:00 Sale] Tanzanite from Tanzania 0.436ct Loose Stone Sale price¥8,800
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture

[On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
coming soon [12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture

[12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥12,800
Sold out オパール 0.595ctルース

Opal 6mm/0.595ct loose (rose cut)
Sold out Citrine 0.833ct loose stone

Citrine 0.833ct loose stone
Sold out アメジスト 8.044ctルース

Amethyst 8.044ct loose
coming soon [12561694] Australian black opal 1.837ct loose

[12561694] Australian black opal 1.837ct loose Sale price¥69,800
coming soon [12561692] Australian Boulder Opal 2.326ct Loose

[12561692] Australian Boulder Opal 2.326ct Loose Sale price¥69,800
coming soon Synthetic rutile 0.538ct loose stone

Synthetic rutile 0.538ct loose stone Sale price¥9,800
coming soon [12561445] Spinel 0.310ct Loose Stone

[12561445] Spinel 0.310ct Loose Stone Sale price¥6,980
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 8.033ctルース

【12/25 22時販売】メキシコ産ファイアーアゲート 8.033ctルース Sale price¥39,800
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 10.683ctルース

【12/25 22時販売】メキシコ産ファイアーアゲート 10.683ctルース Sale price¥59,800
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 14.193ctルース

【12/25 22時販売】メキシコ産ファイアーアゲート 14.193ctルース Sale price¥69,800
coming soon 【12/25 22時販売】カナダ産アンモライト 17.043ctルース

【12/25 22時販売】カナダ産アンモライト 17.043ctルース Sale price¥49,800
coming soon 【12/25 22時販売】コロンビア産エメラルドキャッツアイ 1.121ctルース

【12/25 22時販売】コロンビア産エメラルドキャッツアイ 1.121ctルース Sale price¥49,800
coming soon 【12/25 22時販売】コロンビア産エメラルドキャッツアイ 0.959ctルース

【12/25 22時販売】コロンビア産エメラルドキャッツアイ 0.959ctルース Sale price¥45,800
coming soon 【12/25 22時販売】インド産ムーンストーン 5.0mm/0.474ctルース（ローズカット）

【12/25 22時販売】インド産ムーンストーン 5.0mm/0.474ctルース（ローズカット） Sale price¥6,980

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.