Under 1.0 ct

[Item 12564248] Madagascar Sapphire 0.385ct Loose Stone Sale price¥18,800

[Available 10/10 at 10 PM] Brazilian Yellow Beryl 0.952ct Loose Gemstone Sale price¥14,800

[Available Oct 10, 10:00 PM] Madagascar Apatite 0.300ct Loose Stone Sale price¥8,800

[10/10 10:00 PM Release] Turkish Diopside 0.450ct Loose Stone Sale price¥9,800

[On sale 10/11 at 22:00] Burmese color-change zircon 0.249ct loose stone Sale price¥39,800

[On sale 10/12 at 22:00] Sri Lankan Uva Moonstone 0.740ct Loose Stone Sale price¥14,800

【Available 10/12 at 10:00 PM】 Pakistani Vayrynenite 0.075ct Loose Stone Sale price¥16,800

[Available 10/12 at 10 PM] Pakistani Vayrynenite 0.067ct Loose Gemstone Sale price¥14,800

[10/12 10 PM Release] Vayrynenite from Pakistan, 0.064ct Loose Gemstone Sale price¥14,800

[10/12 10 PM Release] Pakistani Väyrynenite 0.099ct Loose Gemstone Sale price¥22,800

[10/13 10:00 PM Release] Tanzanian Cobalt Spinel 2.7mm/0.100ct Loose Stone with Identification Report Sale price¥39,800

[Available 10/11 at 10 PM] Tanzanian Cobalt Spinel 2.3mm/0.070ct Loose Gemstone with Identification Report Sale price¥22,800

[Available 10/9, 10 PM] Tanzanian Cobalt Spinel 2.1mm / 0.053ct Loose Gemstone with Identification Report Sale price¥19,800

[10/9 10 PM Sale] Russian Non-Oiled Emerald 0.061ct Loose Stone Sale price¥35,800

[Available 10/11 at 22:00] Colombian Trapiche Emerald 0.981ct Loose Gemstone with Appraisal Report Sale price¥58,800

[Item 12564612] Unheated Bicolor Sapphire from Windsor, Tanzania, 0.620ct Loose Gemstone Sale price¥75,800

[Lottery Sale ②_202608_04] Unheated Kashmir Sapphire 0.710ct Loose Stone GIA Sale price¥298,000

[Sat, Sep 5, 10:00 AM Deadline: Lottery Sale_10] Colombian Non-Oiled Emerald 0.290ct Loose Stone GIA Sale price¥178,000

[Ref: 12564102] Pink Sapphire from Sri Lanka, 0.142ct loose stone Sale price¥9,800

[12563017 listed] Pink Sapphire 0.143ct Loose Stone Sale price¥12,800

[Ref: 12564306] Brazilian Emerald Cat's Eye 0.582ct Loose Gemstone Sale price¥22,800

ケニア産ケニア産ゴールドシーンサファイア（スターサファイア） 0.311ctルース

[Item 12564329] Kenyan Gold Sheen Sapphire (Star Sapphire) 0.311ct Loose Stone Sale price¥24,800

[Item 12564332] Kenyan Gold Sheen Sapphire 0.859ct Loose Gemstone Sale price¥59,800

[Lottery Sale_01][For Winners Only][Item 12564184] East African Unheated Bicolor Sapphire 0.510ct Loose GIA Sale price¥98,000

[Mon, Sep 14, 10:00 AM Deadline: Lottery Sale_09] Unheated Pigeon Blood Ruby 0.620ct Loose Stone AIGS Sale price¥148,000

【10/3 10 PM Release】Unheated Bicolor Sapphire from Winza, Tanzania 0.500ct Loose Gemstone with Identification Report Sale price¥59,800

[Available 10/2 at 10 PM] Unheated Bicolor Sapphire from Winza, Tanzania, 0.460ct Loose Stone with Gem Identification Report Sale price¥59,800

[Available 10/3 at 10 PM] Tanzanian Cobalt Spinel 3.6mm/0.187ct Loose Stone, JGL Origin Report Included Sale price¥98,000

[Available Oct 3, 10 PM] Pakistani Väyrynenite 0.066ct Loose Gemstone Sale price¥14,800

[Available 10/3, 10 PM] Pakistan Vayrynenite 0.076ct Loose Gemstone Sale price¥16,800

[Available 10/3, 10 PM] Pakistani Väyrynenite 0.095ct Loose Gemstone Sale price¥19,800

[10/3 10 PM Release] Afghan Hauyne 0.093ct Loose Stone Sale price¥22,800

[10/3 10 PM Sale] Afghan Hauyne 0.095ct Loose Gemstone Sale price¥18,800

[Available 10/3, 10:00 PM] Afghan Hauyne 0.067ct Loose Stone Sale price¥12,800

[10/7 10:00 PM Release] Afghan Hauyne 0.082ct Loose Stone Sale price¥12,800

[Available 10/10 at 22:00] Afghan Hauyne 0.226ct Loose Gemstone Sale price¥18,800

[Available 10/7 at 10 PM] Afghan Hauyne 0.183ct Loose Gemstone Sale price¥19,800

[Available 10/2 at 10 PM] Mozambique Paraiba Tourmaline 0.135ct Loose Stone Sale price¥7,980

[Available 10/2, 10:00 PM] Mozambique Paraiba Tourmaline 0.096ct Loose Gemstone Sale price¥6,980

[10/3 10 PM Sale] Colombian Emerald 0.126ct Loose Gemstone with Appraisal Report Sale price¥39,800

[10/3 10 PM Sale] Colombian Emerald 0.211ct Loose Gemstone with Identification Report Sale price¥59,800

[Available 10/3, 10:00 PM] Santa Maria Aquamarine from Brazil, 0.318ct loose stone, with certificate of authenticity Sale price¥29,800

【Available 10/3 at 10 PM】 Colombian Mica-in-Emerald 4.2mm/0.249ct Loose Gemstone with Certificate of Authenticity Sale price¥22,800

【10/3 22:00 Release】 Colombian Mica-in-Emerald 0.140ct Loose Stone with Identification Report Sale price¥18,800

[Available Oct 11, 10 PM] Colombian Pyrite and Mica in Emerald 0.432ct Loose Stone with Identification Report Sale price¥35,800

[Available Oct 4, 10 PM] Synthetic Alexandrite 0.264ct Loose Gemstone Sale price¥9,800

[Available 10/4, 10 PM] Lab-created Alexandrite 0.614ct Loose Stone Sale price¥15,800

[On sale 10/7, 10 PM] Indian Black Moonstone 0.568ct Loose Gemstone Sale price¥8,800

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.