Colombian emerald cat's eye 0.094ct loose
Sale price¥8,800
Colombian emerald cat's eye 0.112ct loose
Sale price¥9,800
Malaya garnet 0.972ct loose
Sale price¥9,800
Hessonite Garnet 0.309ct Loose Stone
Sale price¥4,980
Diamond 0.054ct loose (VS class equivalent, emerald cut)
Sale price¥8,800
Afghanite 0.210ct loose
Sale price¥6,980
Fluorite 1.420ct loose stone
Sale price¥3,980
California Axinite 1.150ct Loose Stone (Phantom Cut)
Sale price¥8,800
Bicolor sapphire 0.323ct loose
Sale price¥9,800
Bicolor sapphire 0.149ct loose
Sale price¥6,980
Bicolor sapphire 0.334ct loose
Sale price¥9,800
Padparadscha sapphire 0.200ct loose
Sale price¥29,800
Red spinel 0.346ct loose stone
Sale price¥22,800
![[Available at 10 PM on August 23rd] Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010023.jpg?v=1755868377&width=4000)
[On sale at 10pm on August 25th] Zambian emerald 0.166ct loose stone
Sale price¥8,800
[12560252] Zambian emerald 0.138ct loose stone
Sale price¥8,800
[12560246] Green Zoisite 1.316ct Loose Stone
Sale price¥15,800
[12560244] Bicolor Zoisite 0.508ct Loose Stone
Sale price¥7,980
Pigeon Blood Ruby 0.340ct Loose
Sale price¥59,800
[12559903] 2.991ct Brazilian Imperial Topaz Loose Stone
Sale price¥158,000
Pigeon Blood Ruby 0.280ct Loose
Sale price¥49,800
1.483ct blue sapphire loose stone
Sale price¥98,000
Unheated ruby 0.130ct loose
Sale price¥25,800
Cornflower blue sapphire 0.490ct loose stone
Sale price¥98,000
Padparadscha sapphire 0.220ct loose stone
Sale price¥34,800
Royal blue sapphire 1.220ct loose stone
Sale price¥298,000
0.466ct Saffron Loose Stone with Certificate of Authenticity
Sale price¥37,800
![[Available at 10 PM on August 24th] [Limited to 4 stones] Brazilian Blue Topaz Cat's Eye Loose Stone (7.0-7.5mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_8bfa0fdf-e296-4b88-babb-a01dd576199f.png?v=1755995326&width=2000)
![[Available at 10 PM on August 27th] [Limited to 7 stones] Brazilian Limonite in Quartz (1 loose stone, average 6 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_10790d8c-055f-404e-b91b-4dc8a6f1ff16.png?v=1756029326&width=2000)
Sunstone Scapolite 1.510ct loose
Sale price¥12,800
Larimar 33.829ct loose Japanese-German book
Sale price¥39,800
Brazilian alexandrite 0.091ct loose
Sale price¥15,800
Brazilian alexandrite 0.102ct loose
Sale price¥15,800
Rose quartz 15mm/10.850ct loose
Sale price¥3,980
Rose quartz 15mm/10.950ct loose
Sale price¥3,980
[Sakura Incut] Sky Blue Topaz 12mm Loose with Patch
Sale price¥39,800
Brazilian Paraiba tourmaline 0.156ct raw stone (CuO:2.5%, MnO:0.5%)
Sale price¥15,800
Brazilian Paraiba tourmaline 0.448ct raw stone (CuO:2.7%, MnO:2.0%)
Sale price¥19,800
Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%)
Sale price¥15,800
Bicolor Benitoite 0.624ct Loose Japanese-German Edition
Sale price¥188,000
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.
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.