Under 1.0 ct

[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

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

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

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

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

[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

[8/30 22:00 Release] Madagascar Sapphirine 0.164ct Loose Stone with Appraisal Certificate Sale price¥12,800

[Available 8/30 at 10:00 PM] Madagascar Sapphirine 0.145ct Loose Stone with Identification Report Sale price¥11,800

【8/30 10 PM Release】Sphene from Zimbabwe 0.302ct Loose Gemstone Sale price¥8,800

[Available 8/30 at 10 PM] Colombian Mint Color Emerald 0.359ct Loose Stone Sale price¥12,800

[8/30 10:00 PM Release] Mexican Fire Opal 0.352ct Loose Stone Sale price¥7,980

[Available 8/30 at 10 PM] Zimbabwean Sphene 0.332ct Loose Gemstone Sale price¥9,800

[Available 8/29 at 10 PM] Madagascar Andalusite 0.454ct Loose Gemstone Sale price¥7,980

[Available 8/29 at 10 PM] Tanzanian Purple Spinel 0.751ct Loose Stone Sale price¥18,800

[8/29 10 PM Sale] Tanzanian Mint Garnet 0.296ct Loose Gemstone Sale price¥8,800

[8/29 10 PM Sale] Brazilian Lavender Quartz (Skorolite) 0.475ct Loose Gemstone Sale price¥7,980

[#202607 Akihabara Pop-up Store - Currently Removed from Stock] [Listed as 12555668] Cambodian Colorless Zircon 0.929ct Loose Stone Sale price¥9,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563192】Unheated Ruby 0.210ct Loose Stone Sale price¥62,800

【#202607 Akihabara Pop-up Store - Currently Removed】【Listed as 12563268】Rough Diamond (Sawable) from South Africa 0.271ct Sale price¥88,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.284ctルース

【#202607 Akihabara Pop-up, Currently Out of Stock】【12563254 Listed】Madagascar Bekily Blue Garnet (Color Change Garnet) 0.284ct Loose Sale price¥59,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.116ctルース

【#202607 Akihabara Pop-up Store - Currently Displayed Off-site】【Listed as 12563184】Madagascar Andesine-Labradorite (Common Name: Rainbow Moonstone) 0.116ct Loose Gemstone Sale price¥14,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【12563063 Listed】Padparadscha Sapphire 0.619ct Loose Stone Sale price¥138,000

Pakistani Peridot 5.2mm/0.562ct Loose Stone Sale price¥9,800

[#202607AkihabaraPop-upExhibition][12563418Posted] Burmese Ruby 0.303ct Loose Sale price¥9,800

Brazilian Euclase 0.224ct Loose Stone (Bicolor Euclase) Sale price¥18,800

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800

Brazilian Euclase 0.213ct loose stone (bicolor Euclase) Sale price¥12,800

【9/1 10 PM Release】Colombian Emerald 0.123ct Loose Gemstone Sale price¥18,800

[Available 9/1 at 10 PM] Tanzanian Tsavorite 0.366ct Loose Stone Sale price¥13,800

[Available 9/1 at 10 PM] Afghan Mint Color Tourmaline 0.290ct Loose Stone Sale price¥14,800

[9/2, 10 PM release] Madagascar Padparadscha Sapphire 0.497ct Loose Stone, DGL Certified Sale price¥69,800

[9/2 10 PM Sale] Madagascar Sapphirine 0.166ct Loose Gemstone with Identification Report Sale price¥13,800

[On sale 9/1 at 22:00] Pigeon Blood Ruby 0.350ct Loose Stone AIGS Sale price¥49,800

[Available 9/2, 10:00 PM] Pigeon Blood Ruby 0.325ct Loose Stone, JTL Certified Sale price¥69,800

[Available 9/2 at 10 PM] Mahenge Spinel (Pink Spinel) from Tanzania, 0.366ct Loose Stone, with Identification Report Sale price¥39,800

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.