Less than 1.0ct

Pink tourmaline 0.819ct loose Sale price¥9,800

Pink tourmaline 0.539ct loose stone (heart shape) Sale price¥9,800

Oregon Sunstone 0.462ct loose Sale price¥5,980

[On sale June 7th, 10 PM] Nigerian Cobalt-bearing Gahnite, 0.158ct loose stone with gemological report Sale price¥22,800

【On sale June 7, 10 PM JST】Nigerian Cobalt Hauyne 0.157ct Loose with Certificate Sale price¥22,800

[Sale on June 7 at 10 PM] Nigerian Cobaltian Garnet 0.154ct Loose Gemstone with Certificate Sale price¥24,800

[On sale June 7th at 10 PM] Madagascar Padparadscha Sapphire 3.9mm/0.282ct Loose Stone, DGL Certified Sale price¥43,800

[On sale June 7th at 10 PM] Madagascar Padparadscha Sapphire 3.9mm/0.336ct Loose Stone DGL Certified Sale price¥45,800

[On Sale June 7, 10 PM] 0.210ct Untreated Colombian Emerald Loose Stone, GIA Certified Sale price¥228,000

[Sale 10 PM JST, June 7] Alexandrite from Odisha, India 0.764 ct Loose Stone with Certificate Sale price¥29,800

[On sale June 8th, 10 PM] India, Orissa Origin Alexandrite 0.760ct Loose Stone with Certification Sale price¥19,800

[On sale June 7th at 10 PM] India Odisha Alexandrite 0.759ct Loose Gemstone with Identification Report Sale price¥22,800

[On Sale June 8th, 10 PM JST] India, Orissa Origin Alexandrite 0.715ct Loose Stone with Certification Sale price¥18,800

[On sale 6/5 at 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000

[On sale May 31 at 10 PM] Myanmar Musgravite 0.351ct Loose Gemstone, Japan-Germany Sale price¥128,000

[On sale May 31st at 10 PM] Malawi Bicolor Zircon (Malawi Zircon) 0.985 ct Loose Sale price¥39,800

[On sale May 30th at 10 PM] Mongolian Andesine 0.464ct Loose Stone Sale price¥9,800

【Available May 30th at 10 PM】Sugilite from South Africa, 0.786 ct Loose Stone Sale price¥12,800

[On sale June 12, 10 PM JST] Madagascar Padparadscha Sapphire 4.1mm/0.396ct Loose Stone DGL Certified Sale price¥52,800

[Sale on June 13th at 10 PM] Ruby 0.820ct Loose Stone - Hogikyo Sale price¥39,800

【Sale starts May 28th at 10 PM JST】Brazilian Paraiba Tourmaline Loose Stone 0.239ct (CuO: 0.8%, MnO: 3.7%) Sale price¥45,800

ブラジル産パライバトルマリン 3.1mm/0.151ctルース（CuO:1.1%、MnO:3.8%）

[On sale May 28th, 10 PM JST] Brazilian Paraiba Tourmaline 3.1mm/0.151ct Loose Stone (CuO: 1.1%, MnO: 3.8%) Sale price¥29,800

ブラジル産パライバトルマリン 0.265ctルース（CuO:0.7%、MnO:3.0%）

[On sale May 28, 10 PM JST] Brazilian Paraiba Tourmaline 0.265ct Loose Stone (CuO: 0.7%, MnO: 3.0%) Sale price¥29,800

ブラジル産パライバトルマリン 0.205ctルース（CuO:0.8%、MnO:3.1%）

【Sale starts May 28th at 10 PM JST】Brazilian Paraiba Tourmaline 0.205ct Loose Stone (CuO: 0.8%, MnO: 3.1%) Sale price¥39,800

ブラジル産パライバトルマリン 0.211ctルース（CuO:0.6%,MnO:3.1%）

[On sale May 28 at 10 PM] Brazilian Paraiba Tourmaline 0.211ct Loose Stone (CuO:0.6%, MnO:3.1%) Sale price¥39,800

Loose Paraiba Tourmaline from Brazil, 0.059ct (CuO: 1.4%, MnO: 2.7%) Sale price¥45,800

Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.4%) Sale price¥49,800

0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%) Sale price¥45,800

Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%) Sale price¥55,800

Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%) Sale price¥49,800

Brazilian Paraiba Tourmaline 0.055ct Loose (CuO:1.9%, MnO:2.2%) Sale price¥45,800

Paraiba Tourmaline from Brazil 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥45,800

0.062ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 2.5%) Sale price¥47,800

Brazilian Paraiba Tourmaline 0.058ct Loose Gemstone (CuO: 2.0%, MnO: 2.2%) Sale price¥39,800

Brazilian Paraiba Tourmaline 0.056ct Loose Stone (CuO:2.1%, MnO:2.2%) Sale price¥39,800

Pink tourmaline 0.845ct loose stone Sale price¥12,800

Yellow Opal 0.372ct Loose (Faceted Cut) Sale price¥8,800

Pink spinel 0.713ct loose stone Sale price¥8,800

Goshenite 0.846ct loose stone Sale price¥7,980

Tanzanian Kornerupine 0.172ct loose stone Sale price¥12,800

Paraiba tourmaline from Brazil 0.061ct loose Sale price¥25,800

Paraiba tourmaline from Brazil 0.049ct loose Sale price¥19,800

Tanzanian Kornerupine 0.213ct loose stone Sale price¥12,800

Color change sapphire 0.473ct loose stone (purple sapphire) Sale price¥25,800

Paraiba tourmaline from Brazil 0.018ct loose Sale price¥12,800

Paraiba tourmaline from Brazil 0.023ct loose Sale price¥19,800

Madagascar Green Sapphire 0.253ct Loose Sale price¥9,800

Madagascar Yellow Sapphire 4.4mm/0.417ct Loose Sale price¥14,800

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.