Less than 0.5ct

【2/11 22時販売】ダイヤモンド原石（メイカブル） 0.353ct原石 Sale price¥14,800

【2/11 22時販売】ダイヤモンド原石（メイカブル） 0.279ct原石 Sale price¥9,800

【2/11 22時販売】ダイヤモンド原石（メイカブル） 0.284ct原石 Sale price¥12,800

【2/8 22時販売】カナダ産グリーンダイヤモンド原石（ソーヤブル） 0.338ct原石（トライゴン有り）　 Sale price¥128,000

【2/7 22時販売】コロンビア産ノンオイルエメラルド（NONE） 2.8mm/0.070ctルース GIA Sale price¥128,000

【2/7 22時販売】コロンビア産ノンオイルエメラルド 0.220ctルース GIA Sale price¥248,000

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%）

[On Sale 2/2 at 10 PM] Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.6%) Sale price¥22,800

[On Sale 2/6 at 10 PM] Oil-Free Red Beryl from the United States, 2.6mm/0.050ct Loose, GIA Sale price¥79,800

[On Sale at 10 PM on 2/6] 0.296ct Pink Diamond Loose (Cabochon Cut) with Certificate of Authenticity Sale price¥188,000

[12560824] Russian Alexandrite 0.091ct Loose Stone Sale price¥69,800

[On Sale 2/1 at 10 PM] Mexican Fire Opal 0.218ct Loose (Faceted) Sale price¥18,800

[On Sale 2/1 at 10pm] Brazilian Alexandrite 0.193ct Loose Stone Sale price¥98,000

[On Sale 2/1 at 10 PM] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.072ct Loose Stone Sale price¥9,800

[On Sale 2/1 at 10 PM] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.076ct Loose Stone Sale price¥9,800

[On Sale 2/1 at 10 PM] Russian Alexandrite 2.4mm/0.061ct Loose Stone Sale price¥45,800

[On Sale 2/1 at 10pm] Colombian Emerald 0.451ct Loose Sale price¥39,800

[On Sale 2/1 at 10pm] Mexican Fire Opal 0.281ct Loose Sale price¥15,800

Mexican Fire Opal 0.277ct Loose (Faceted Cut) Sale price¥5,980

Mexican Fire Opal 0.472ct Loose (Star Cut, Faceted Cut) Sale price¥8,800

Colombian trapiche emerald (reverse trapiche) 0.457ct rough stone Sale price¥25,800

Cambodian blue zircon (Ratanakiri blue) 0.453ct loose Sale price¥6,980

Pakistani Oil in Quartz 0.443ct Loose Stone Sale price¥5,980

Green tourmaline 0.388ct loose Sale price¥8,800

[12561844] Colombian cat's eye emerald 0.417ct loose Sale price¥39,800

[On Sale at 10 PM on February 5th] Tanzanite from Tanzania, 4.5mm/0.390ct Loose Stone, AIGS Sale price¥18,800

[12561273] Tanzanian Kornerupine 0.336ct Loose Stone Sale price¥22,800

[On Sale 2/4 at 10pm] Madagascar Grandidierite 0.099ct Loose Stone Sale price¥18,800

[On Sale 2/4 at 10pm] Madagascar Grandidierite 0.097ct Loose Stone Sale price¥29,800

[On Sale 2/4 at 10pm] Tibetan Andesine 0.348ct Loose Stone Sale price¥12,800

[On Sale 2/4 at 10pm] Indian Parrot Chrysoberyl 4.5mm/0.375ct Loose Stone Sale price¥15,800

[On Sale 2/4 at 10pm] Indian Parrot Chrysoberyl 4.2mm/0.347ct Loose Stone Sale price¥12,800

[12561175] Mexican Opal (Faceted) 0.208ct Loose Sale price¥9,800

[On sale at 10pm on 2/4] Ruby 3.3mm/0.171ct Loose Sale price¥39,800

[On Sale 2/4 at 10pm] Mexican Fire Opal 0.362ct Loose Sale price¥15,800

[On Sale 2/4 at 10pm] Mozambique Pink Spinel 0.227ct Loose Sale price¥12,800

Colombian emerald 0.243ct loose stone Sale price¥69,800

[On Sale 2/3 at 10pm] Colombian Emerald 0.159ct Loose Sale price¥47,800

Bicolor Grossular Garnet 0.316ct Loose Stone Sale price¥22,800

Paraiba tourmaline from Brazil 0.162ct loose Sale price¥69,800

American red beryl 0.111ct loose stone Sale price¥29,800

American red beryl 0.047ct loose stone Sale price¥13,800

Oregon Sunstone from the United States, 0.498ct loose stone Sale price¥15,800

Grandidierite from Madagascar 0.269ct loose stone Sale price¥79,800

Paraiba tourmaline from Brazil 0.097ct loose Sale price¥22,800

Unheated Pigeon Blood Ruby 0.310ct Loose Sale price¥55,800

Tanzanite 0.311ct loose stone from Tanzania Sale price¥12,800

[12560411] Brazilian Imperial Topaz 0.353ct Loose Stone Sale price¥12,800

[12560006] Myanmar Ice Jadeite 0.408ct Loose Stone Sale price¥9,800

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.