Oval Cut

[Ref: 12564456] Mozambique Aquamarine 0.837ct Loose Stone Sale price¥9,800

[Available 10/18 at 10 PM] Ruby 0.185ct Loose Stone with Appraisal Report Sale price¥12,800

[Item No. 12564322] Burmese Red Spinel 0.176ct Loose Gemstone Sale price¥17,800

[Item 12564627] Bekily Blue Garnet (Color-Change Garnet) from Madagascar, 0.620ct Loose Stone Sale price¥69,800

[Item 12564630] Black Sapphire 5.833ct Loose Stone Sale price¥69,800

[Available 10/14 at 22:00] Pakistani Vanadium Sphene 1.690ct Loose Gemstone with Identification Report Sale price¥69,800

[Available 10/12 at 10 PM] Indian Iolite Sunstone 1.225ct Loose Gemstone Sale price¥9,800

[Available Oct 12, 10 PM] Indian Iolite Sunstone 1.113ct Loose Gemstone Sale price¥11,800

[10/12 10 PM Sale] Tanzanian Sunstone (Illusion Sunstone) 7.715ct Loose Stone Sale price¥24,800

[10/11 10 PM Sale] Mozambique Aquamarine 3.541ct Loose Gemstone with Identification Report Sale price¥45,800

[Available 10/14 at 10 PM] Russian Demantoid Garnet (horsetail inclusions visible) 0.206ct Loose Gemstone Sale price¥79,800

[Available 10/14 at 22:00] Russian Emerald 0.247ct Loose Gemstone Sale price¥49,800

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

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

[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 10/17 at 10 PM】 Afghan Hauyne 0.199ct Loose Stone Sale price¥22,800

[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

[10/17 10:00 PM Release] Brazilian Amethyst 14.813ct Loose Stone Sale price¥15,800

[Available 10/2 at 10 PM] Brazilian Unheated Imperial Topaz (Sherry Color) 0.698ct Loose Gemstone Sale price¥98,000

[Available 10/12 at 22:00] Brazilian Color-Shift Amethyst 1.614ct Loose Gemstone Sale price¥8,800

[Available Oct 5, 10:00 PM] Malawi Moonstone 1.640ct Loose Stone Sale price¥9,800

[On sale 10/8 at 22:00] Malawi Moonstone 2.121ct Loose Stone Sale price¥12,800

[Deadline: Sat, Sep 5, 10:00 AM: Lottery Sale_09] Sri Lankan Unheated Color-Change Sapphire 1.170ct Loose Stone, GIA certified Sale price¥188,000

Royal Blue Sapphire 0.530ct Loose Stone Sale price¥69,800

[12564298] Phenakite from Malyshevo, Russia, 0.712ct Loose Gemstone Sale price¥22,800

[Item 12564299] Phenakite from Malyshevo, Russia, 0.635ct loose stone Sale price¥22,800

Myanmar Star Peridot 3.644ct Loose Stone Sale price¥29,800

[9/14 (Mon) 10:00 AM Deadline: Lottery Sale_08] Unheated Pigeon Blood Ruby 0.270ct Loose Stone AIGS Sale price¥48,800

[Available 9/30 at 10:00 PM] Brazilian Elestial Amethyst 3.684ct Loose Gemstone Sale price¥8,800

[Available 10/1 at 10 PM] Australian Teal Blue Sapphire 0.555ct Loose Stone Sale price¥19,800

[9/27 10:00 PM Release] Colombian Emerald 0.079ct Loose Stone Sale price¥8,800

[9/27 10:00 PM Release] Colombian Emerald 0.121ct Loose Stone Sale price¥15,800

[Available 9/23 at 10:00 PM] Sri Lankan Moonstone 1.440ct Loose Gemstone Sale price¥15,800

[Available 9/22, 10 PM] Unheated Pigeon Blood Ruby 0.310ct Loose AIGS Sale price¥49,800

[Available 9/22, 10 PM] Colombian Emerald 0.150ct Loose Stone Sale price¥12,800

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） 1.742ctルース

Andesine-Labradorite (commonly known as Rainbow Moonstone) from Madagascar, 1.742ct loose gemstone Sale price¥37,800

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

[Available 9/19 at 10 PM] Oregon Sunstone 1.002ct Loose Gemstone Sale price¥6,980

[9/26 10 PM Release] Sri Lankan Green Zircon 0.739ct Loose Stone Sale price¥14,800

[9/26 10:00 PM Release] Sri Lankan Green Zircon 0.702ct Loose Stone Sale price¥14,800

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） 0.521ctルース

[9/20 10:00 PM Release] Madagascar Andesine Labradorite (Common name: Rainbow Moonstone) 0.521ct Loose Stone Sale price¥8,800

[Available 9/20 at 10:00 PM] Synthetic Alexandrite 0.716ct Loose Stone Sale price¥15,800

[On sale 9/20 at 10 PM] Indian Black Moonstone 0.882ct Loose Stone Sale price¥8,800

[9/22, 10 PM Sale] Malawi Moonstone 4.333ct Loose Gemstone Sale price¥19,800

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.