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[Available 9/6 at 10:00 PM] Kochi Prefecture Peach Coral 16.753ct Loose Stone Sale price¥24,800

【Available 9/6 at 10 PM】 Tanzanian Windsor Sapphire (Purple Sapphire) 0.277ct Loose Gemstone Sale price¥12,800

タンザニア産ウィンザーサファイア（カラーチェンジサファイア） 0.261ctルース

【9/12 22:00 Release】 Tanzanian Windsor Sapphire (Color Change Sapphire) 0.261ct Loose Gemstone Sale price¥9,800

【9/6 10PM On Sale】Pakistan Oil-in-Quartz 0.281ct Loose Gemstone Sale price¥4,980

[9/7 22:00 Release] Pakistani Oil-in-Quartz 0.505ct Loose Stone Sale price¥4,980

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.358ctルース

[On sale 9/6 at 22:00] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.358ct Loose Gemstone Sale price¥12,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.574ctルース

[Available 9/7 at 10 PM] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.574ct Loose Stone Sale price¥14,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.507ctルース

【Available 9/10 at 10 PM】 Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.507ct Loose Stone Sale price¥12,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.930ctルース

[Available 9/10 at 10 PM] Brazilian Rainbow Aquamarine (Iridescence Aquamarine) 1.930ct Loose Stone Sale price¥18,800

【9/7 10 PM Release】Tanzanian Silky Pink Spinel 0.219ct Loose Gemstone Sale price¥8,800

[On sale 9/7 at 10 PM] Tanzanian Silky Pink Spinel 0.218ct Loose Stone Sale price¥8,800

[Available 9/7 at 10 PM] Mahenge Spinel (Pink Spinel) from Tanzania, 0.386ct loose stone Sale price¥15,800

[9/7 10 PM Sale] Brazilian Sky Blue Topaz 3.437ct Loose Stone Sale price¥9,800

【Available Sept 10, 10:00 PM】 Tanzanian Bicolor Grossular Garnet 0.869ct Loose Stone Sale price¥25,800

[9/7 10:00 PM Sale] Tanzania Bicolor Grossular Garnet 0.433ct Loose Stone Sale price¥15,800

【Available 9/7 at 10 PM】 Tanzanian Bicolor Grossular Garnet 0.596ct Loose Gemstone Sale price¥14,800

[9/7 22:00 Release] Brazilian Bicolor Tourmaline 1.753ct Loose Stone Sale price¥29,800

【9/7 10 PM Release】Indian Parrot Chrysoberyl 0.288ct Loose Stone Sale price¥12,800

[Available 9/7 at 10 PM] Indian Parrot Chrysoberyl 0.630ct Loose Gemstone Sale price¥18,800

ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 0.496ctルース

[9/7 10 PM Release] Brazilian Unheated Imperial Topaz (Sherry Color) 0.496ct Loose Gemstone Sale price¥29,800

[Available 9/7 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm / 0.526ct Loose Gemstone Sale price¥15,800

[Available 9/24 10:00 PM] USA Anthill Garnet 4.0mm, 0.336ct Loose Stone Sale price¥9,800

[Available 9/11 at 10 PM] Sri Lankan Purple Sapphire 0.271ct Loose Gemstone with Identification Report Sale price¥18,800

非加熱ブラジル産パライバトルマリン 0.079ctルース（CuO:1.8%、MnO:2.6%）

Unheated Brazilian Paraiba Tourmaline 0.079ct loose stone (CuO: 1.8%, MnO: 2.6%) Sale price¥45,800

Brazilian pink tourmaline 1.458ct loose stone Sale price¥39,800

Amazon Green Opal 0.814ct Loose (Faceted Cut) Sale price¥7,980

Amazonian green opal 0.517ct loose stone (faceted cut) Sale price¥7,980

Amazon Green Opal 0.285ct Loose (Faceted Cut) Sale price¥6,980

Brazilian copper rutilated quartz 1.334ct loose stone Sale price¥8,800

Oregon Sunstone from the United States 0.292ct loose stone Sale price¥6,980

Oregon Sunstone from the United States 1.132ct loose stone Sale price¥12,800

Green Fluorite 38.074ct Loose Sale price¥148,000

Brazilian Tourmaline (untreated) 5.120ct loose stone Sale price¥39,800

Brazilian Yellow Beryl 11.411ct Loose Stone, Japan-Germany Exchange Sale price¥25,800

South African Rhodochrosite 0.990ct Loose Stone by Nikkei Sale price¥128,000

Brazilian Indigolite Tourmaline 1.514ct Loose Stone, Japan-Germany Exchange Sale price¥55,800

Brazilian Particolor Paraiba Tourmaline 0.490ct Loose (Bicolor Paraiba Tourmaline) GIA Sale price¥398,000

Tanzania Bicolor Zoisite 0.278ct Loose Stone Sale price¥4,980

Tanzania Bicolor Zoisite 0.357ct Loose Stone Sale price¥6,980

Mozambique Aquamarine 4.9mm/0.463ct Loose Stone Sale price¥8,800

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

[Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report Sale price¥79,800

[Lottery Sale 0818_09] Brazilian Dioptase 1.608ct Loose with Certificate Sale price¥59,800

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000

[Lottery Sale 0812_18] Zambian Non-Oil Emerald 0.540ct Loose GIA Sale price¥178,000

Tibetan bicolor andesine 0.755ct loose stone Sale price¥6,980

Pt900/Pt850 ピンクトルマリン 1.10ct ダイヤモンド0.02ctペンダント（ネックレス）鑑別書

[22602719 Posted] [Calafuri] Pt900/Pt850 Pink Tourmaline 1.10ct Diamond 0.02ct Pendant (Necklace) with Certificate Sale price¥98,000

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.