Purple sapphire 0.240ct loose
Sale price¥4,980
Afghanite 0.496ct loose Japanese-German book
Sale price¥9,800
Burmese red spinel 0.418ct loose
Sale price¥55,800
Tanzanite 41.690ct loose
Sale price¥2,480,000
Brazilian Pink Imperial Topaz 2.794ct Loose Japanese-German Edition
Sale price¥128,000
Sphene 0.590ct loose
Sale price¥3,980
Pink tourmaline cat's eye 3.800ct loose
Sale price¥8,800
Goethite in quartz 1.020ct loose
Sale price¥2,980
Peach benitoite 0.135ct loose Japanese-German book (orange/blue)
Sale price¥158,000
Paraiba tourmaline from Brazil 0.224ct loose (CuO:0.8%, MnO:1.7%)
Sale price¥29,800
Paraiba tourmaline from Brazil 0.203ct loose (CuO: 0.9%, MnO: 2.6%)
Sale price¥29,800
Rough diamond (makeable) 0.353ct loose
Sale price¥25,800
Rough diamond (makeable) 0.279ct loose
Sale price¥25,800
Bicolor Benitoite 0.624ct Loose Japanese-German Edition
Sale price¥188,000
Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%)
Sale price¥15,800
Brazilian Paraiba tourmaline 0.448ct raw stone (CuO:2.7%, MnO:2.0%)
Sale price¥19,800
Brazilian Paraiba tourmaline 0.156ct raw stone (CuO:2.5%, MnO:0.5%)
Sale price¥15,800
[Sakura Incut] Sky Blue Topaz 12mm Loose with Patch
Sale price¥39,800
Rose quartz 15mm/10.950ct loose
Sale price¥3,980
Rose quartz 15mm/10.850ct loose
Sale price¥3,980
Brazilian alexandrite 0.102ct loose
Sale price¥15,800
Brazilian alexandrite 0.091ct loose
Sale price¥15,800
Larimar 33.829ct loose Japanese-German book
Sale price¥39,800
Sunstone Scapolite 1.510ct loose
Sale price¥12,800
![[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)
![[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 24th] Limited to 12 stones: Madagascar Sapphirine (Sapphirine) Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010371_a123a6b4-46a8-4394-9eac-427d8a3707ec.jpg?v=1755996019&width=4000)
0.466ct Saffron Loose Stone with Certificate of Authenticity
Sale price¥37,800
Padparadscha sapphire 0.220ct loose stone
Sale price¥34,800
Cornflower blue sapphire 0.490ct loose stone
Sale price¥98,000
Unheated ruby 0.130ct loose
Sale price¥25,800
1.483ct blue sapphire loose stone
Sale price¥98,000
Pigeon Blood Ruby 0.280ct Loose
Sale price¥49,800
[12559903] 2.991ct Brazilian Imperial Topaz Loose Stone
Sale price¥158,000
[12560244] Bicolor Zoisite 0.508ct Loose Stone
Sale price¥7,980
[12560246] Green Zoisite 1.316ct Loose Stone
Sale price¥15,800
[12560252] Zambian emerald 0.138ct loose stone
Sale price¥8,800
[On sale at 10pm on August 25th] Zambian emerald 0.166ct loose stone
Sale price¥8,800
![[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)
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.