Vertical: 2.1 - 3.0mm

[12563393 listed] Tanzanian Red Spinel 0.098ct Loose Stone Sale price¥15,800

[Listed as 12563264] Rough Russian Diamond (Sawable) 0.124ct Sale price¥39,800

[12563374 Posted] Bicolor Euclase from Zimbabwe, 0.055ct Loose Stone Sale price¥14,800

[Published 12562264] Brazilian Lazulite 0.048ct Loose Sale price¥36,800

[Available 7/4 10 PM JST] Diamond 3.0mm/0.100ct Loose Stone (E, VVS-2, VeryGood) Sale price¥22,800

グリーンダイヤモンド 0.100ctルース(VERY LIGHT GREEN, SI-1)

[On sale July 4th at 10 PM] Green Diamond 0.100ct Loose Stone (VERY LIGHT GREEN, SI-1, Old Cut) Sale price¥39,800

Paraiba tourmaline from Brazil 0.090ct loose Sale price¥69,800

Paraiba tourmaline from Brazil 0.056ct loose Sale price¥45,800

[On sale July 5th at 10 PM JST] Madagascar Grandidierite 2.8mm/0.086ct Loose Stone with Certification Sale price¥18,800

[On Sale July 5 at 10 PM JST] Madagascar Grandidierite 2.5mm/0.065ct Loose Stone with Certification Sale price¥15,800

Russian rough diamond (sawable) 0.088ct loose Sale price¥19,800

Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon) Sale price¥25,800

[On sale June 27th, 10 PM JST] Brazilian Lazulite 0.022ct Loose Stone with Certificate Sale price¥18,800

[Sale on 6/27 at 10 PM] Brazilian Lazulite (Lazulite) 0.067ct Loose Stone with Certificate Sale price¥49,800

[Sales start June 30th at 10 PM] Brazilian Lazulite 0.061ct Loose Stone with Gemstone Identification Report Sale price¥45,800

[Updated 12552163] Benitoite 0.099ct loose stone Sale price¥29,800

【On Sale 6/25 10 PM JST】Euclase from Zimbabwe 0.070 ct Loose Stone with Certificate Sale price¥16,800

[Sale on June 25th at 10 PM] Zimbabwe Euclase 0.067ct Loose Stone with Certification Sale price¥15,800

[On sale June 26, 10 PM JST] Russian rough diamond (sawable) 0.148ct (trigon) Sale price¥49,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:2.0%, MnO:2.2%) Sale price¥35,800

[On sale June 17th at 10 PM] Canadian Eudialyte 2.4mm/0.052ct Loose Stone with Appraisal Sale price¥15,800

【Sales start at 10 PM on June 21】Myanmar Leuco Garnet 0.108ct Loose Gemstone with Certificate Sale price¥22,800

[Available 6/18 10 PM JST] Botswana rough diamond (sawable) 0.118ct (trigon) Sale price¥29,800

[On Sale 10 PM, June 14th] Botswana Rough Diamond (Sawable) 0.090ct (Trigon) Sale price¥22,800

[Available June 21 at 10 PM] Botswana Rough Diamond (Sawable) 0.087ct Rough (Trigon) Sale price¥21,800

[On sale June 6th, 10 PM JST] Nigerian Cobaltian Gahnite 0.122ct Loose Gemstone with Identification Report Sale price¥18,800

South African diamond rough (sawable) 0.110ct rough Sale price¥22,800

South African diamond rough (sawable) 0.085ct rough Sale price¥15,800

パープルダイヤモンド 0.048ctルース(FANCY VIVID PINK PURPLE, SI-1)

[On sale June 5th at 10 PM] Purple Diamond 0.048ct Loose Stone (FANCY VIVID PINK PURPLE, SI-1) CGL Sale price¥198,000

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

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

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

0.165ct Unheated Silky Pink Sapphire from Vietnam Sale price¥5,980

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800

[On sale May 20th at 10 PM] Tanzanian Pink Zoisite 0.190ct Loose Gemstone with Certificate Sale price¥79,800

[On sale May 20th at 10 PM] Unheated Color Change Brazilian Paraiba Tourmaline 0.050ct Loose Stone GIA Sale price¥128,000

Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone Sale price¥18,800

Brazilian alexandrite 0.061ct loose Sale price¥12,800

Brazilian alexandrite 0.058ct loose Sale price¥11,000

Brazilian alexandrite 0.051ct loose Sale price¥9,800

Brazilian alexandrite 0.060ct loose Sale price¥11,000

[On sale May 15th, 10 PM JST] Brazilian Lazulite (0.052ct Loose Stone) with Certification Sale price¥32,800

[Sales start May 6, 10 PM] Canadian Eudialyte 0.056ct Loose Stone with Certificate Sale price¥15,800

[On sale May 6th at 10 PM] Brazilian Lazulite (blue stone) 0.066ct Loose Stone with Certificate Sale price¥39,800

Russian Alexandrite 2.5mm/0.078ct Loose Stone Sale price¥49,800

[Sale on 5/6 at 22:00] Namibian Jeremejevite 0.073ct Loose Stone with Certificate Sale price¥15,800

【32501879掲載】グレーダイヤモンド 0.096ctルース(VERY LIGHT GRAY, SI-1)

Gray Diamond, 2.9mm/0.096ct Loose (VERY LIGHT GRAY, SI-1) Sale price¥15,800

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.