![[On Sale at 10 PM on January 25th] Limited to 13 stones. Includes a 0.16ct Fancy Vivid color (with Chuho sorting), normally priced at ¥32,800. Yellow Diamond Loose Gacha. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_6b90ec5c-8d38-4e7a-ae9a-3278b46dc287.png?v=1769212830&width=2250)
![[Available at 10 PM on January 1st] Limited to 15 Red Gemstones! Includes Pigeon Blood Ruby with Certificate of Authenticity. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/2_7efa5fdf-f106-4e59-80a1-d7253bbe0fc1.png?v=1769511248&width=2000)
![[Available at 10 PM on January 31st] Limited to 15 stones: Dominican Republic Conch Pearl & Shell Loose Stone, Including Rare Semi-White and Flame Patterns [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/9_e5bd34b3-f167-44d0-982f-3ac65fd6f1e8.png?v=1768869150&width=2000)
![[Available at 10 PM on January 30th] Limited to 6 Silky Pink Sapphires from Vietnam (Sanjay Cut, Round, 3.0-3.3mm) Gacha [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_270805e5-06fd-4d44-b9b8-29940a8a5fbd.png?v=1769567078&width=2250)
【2/2 22時販売】コロンビア産エメラルド 18.900ct原石（パイライト付き）
Sale price¥22,800
Colombian pyrite emerald 8.044ct loose stone
Sale price¥188,000
![[12561096] Mexican Fire Opal 0.218ct Loose](http://store.karatz.jp/cdn/shop/files/P1221603.jpg?v=1769815878&width=4000)
[12561096] Mexican Fire Opal 0.218ct Loose
Sale price¥18,800
【2/1 22時販売】コロンビア産エメラルド 0.451ctルース
Sale price¥39,800
Mexican Fire Opal 0.281ct Loose
Sale price¥15,800
Mexican Fire Opal 0.277ct Loose (Faceted Cut)
Sale price¥5,980
Mexican Fire Opal 0.472ct Loose (Star Cut, Faceted Cut)
Sale price¥8,800
Mexican Fire Opal 0.564ct Loose (Faceted Cut)
Sale price¥12,800
Colombian trapiche emerald (reverse trapiche) 0.457ct rough stone
Sale price¥25,800
Mexican Opal 0.790ct Loose (Contrarus Opal, Faceted Cut)
Sale price¥18,800
Colombian emerald 0.093ct loose stone
Sale price¥22,800
![[On sale at 10pm on January 29th] 0.258ct loose ruby](http://store.karatz.jp/cdn/shop/files/P5302328_9d2c942e-60d5-4803-a8dd-c7bc5eb905d5.jpg?v=1769563574&width=2826)
[On sale at 10pm on January 29th] 0.258ct loose ruby
Sale price¥12,800
South African yellow diamond (makeable) 0.159ct rough stone
Sale price¥12,800
Opal 6mm/0.590ct loose (rose cut)
Sale price¥5,980
![[Available at 10 PM on January 24th] 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring](http://store.karatz.jp/cdn/shop/files/PB067499.jpg?v=1762600308&width=4000)
![[Sakura In-Cut] 6.0mm/0.839ct Loose Sapphire from Ratnapura, Sri Lanka [Available at 10 PM on January 24th]](http://store.karatz.jp/cdn/shop/files/collage_7ab487c3-3173-4149-b4c1-85a3f2bef3bb.png?v=1760166578&width=2250)
![[On Sale at 10 PM on January 28th] Colombian Emerald Cat's Eye 0.238ct Loose](http://store.karatz.jp/cdn/shop/files/P1220660_3cc893ad-ba42-446b-bd86-4eccf5c42cb4.jpg?v=1769482331&width=2792)
![[On Sale at 10 PM on January 26th] Colombian Cat's Eye Emerald 3.0mm/0.098ct Loose](http://store.karatz.jp/cdn/shop/files/P1210633_b80c0067-4014-4b28-a3e0-c771e8e5d9ce.jpg?v=1769301014&width=2975)
![[On Sale at 10 PM on January 26th] Canadian Rough Diamond (Sawable) 0.096ct Rough Stone with Trigon](http://store.karatz.jp/cdn/shop/files/P1210317_bfb4a922-af05-4fe6-a413-4fc926984090.jpg?v=1769300534&width=2715)
![[On Sale at 10 PM on January 26th] Canadian Rough Diamond (Sawable) 0.099ct Rough Stone with Trigon](http://store.karatz.jp/cdn/shop/files/P1210295_8df7e90f-c749-42e3-ad74-add35f15e3b7.jpg?v=1769300344&width=2870)
Unheated silky pink sapphire from Vietnam 0.202ct loose
Sale price¥6,980
Benitoite 0.091ct loose (emerald cut)
Sale price¥25,800
Silky diamond 2.7mm/0.086ct loose
Sale price¥9,800
Silky diamond 2.8mm/0.097ct loose
Sale price¥9,800
Mexican cantera opal 17.528ct loose
Sale price¥29,800
![[On Sale at 10 PM on January 29th] Madagascar Purple Sapphire 4.2mm/0.418ct Loose](http://store.karatz.jp/cdn/shop/files/P1011995.jpg?v=1769144768&width=4000)
![[On Sale at 10 PM on January 27th] 0.291ct Unheated Silky Pink Sapphire from Vietnam](http://store.karatz.jp/cdn/shop/files/P1011941.jpg?v=1769429060&width=4000)
![[On Sale at 10 PM on January 23rd] Unheated Silky Pink Sapphire from Vietnam, 0.218ct Loose](http://store.karatz.jp/cdn/shop/files/P1011914_3f087b35-cabb-4478-bae2-823069241f9d.jpg?v=1768999330&width=2701)
![[On Sale at 10 PM on January 23rd] Unheated Silky Pink Sapphire from Vietnam, 0.168ct Loose](http://store.karatz.jp/cdn/shop/files/P1011861_041b8d7f-ad88-4d19-9f74-f3455f538084.jpg?v=1768999103&width=2949)
![[On sale at 10pm on January 25th] Blue Sapphire 5.0mm/0.552ct Loose](http://store.karatz.jp/cdn/shop/files/P1211725.jpg?v=1769149131&width=4000)
[On sale at 10pm on January 25th] Blue Sapphire 5.0mm/0.552ct Loose
Sale price¥18,800
![[On Sale at 10 PM on January 29th] Mexican Water Opal 4.8mm/0.289ct Loose](http://store.karatz.jp/cdn/shop/files/P1211645.jpg?v=1769147549&width=4000)
![[On Sale at 10 PM on January 27th] Mexican Fire Opal 0.235ct Loose (Faceted)](http://store.karatz.jp/cdn/shop/files/P1211603.jpg?v=1769147090&width=4000)
![[On Sale at 10 PM on January 25th] Mexican Fire Opal 0.191ct Loose (Faceted)](http://store.karatz.jp/cdn/shop/files/P1201367.jpg?v=1769240879&width=4000)
![[On Sale at 10 PM on January 25th] Canadian Rough Diamond (Sawable) 0.103ct Rough Stone](http://store.karatz.jp/cdn/shop/files/P1190498.jpg?v=1769241204&width=4000)
South African yellow diamond (makeable) 0.202ct rough stone
Sale price¥15,800
South African gray diamond (makeable) 0.169ct rough stone
Sale price¥14,800
![[On Sale at 10 PM on January 20th] Sri Lankan Star Ruby 5.0mm/1.062ct Loose Stone with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P1010006_ac1a0c09-5a41-4a3f-b6bb-1fd57c6710b0.jpg?v=1768868469&width=4000)
![[On Sale at 10 PM on January 20th] 0.257ct Unheated Silky Pink Sapphire from Vietnam](http://store.karatz.jp/cdn/shop/files/P1149629.jpg?v=1768773538&width=4000)
![[On Sale at 10 PM on January 20th] Sri Lankan Bicolor Sapphire 0.607ct Loose](http://store.karatz.jp/cdn/shop/files/P1149673.jpg?v=1768773538&width=4000)
![[On Sale at 10 PM on January 17th] Australian Black Opal 0.758ct Loose](http://store.karatz.jp/cdn/shop/files/P1150273.jpg?v=1768479106&width=4000)
[On Sale at 10 PM on January 17th] Australian Black Opal 0.758ct Loose
Sale price¥18,800
![[On Sale at 10 PM on January 17th] 1.091ct Loose Australian Black Opal](http://store.karatz.jp/cdn/shop/files/P1150211.jpg?v=1768527186&width=4000)
![[On Sale at 10 PM on January 17th] 3.583ct Australian Black Opal Loose Stone (Double-Sided)](http://store.karatz.jp/cdn/shop/files/P1150158.jpg?v=1768478549&width=4000)
![[On Sale at 10 PM on January 17th] Sri Lankan Bicolor Sapphire 0.586ct Loose](http://store.karatz.jp/cdn/shop/files/P1150063.jpg?v=1768480240&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.