![Limited to 15 stones: One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010261_a395415b-ed3a-4054-93e9-3ef1eec4d810.jpg?v=1757670251&width=4000)
![Limited to 14 stones: One loose Mozambique hot pink sapphire (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010380_b8f4e8df-e135-458b-8f10-fc4f411d34e2.jpg?v=1760236878&width=4000)
![Limited to 7 stones: One loose, oil-free Russian emerald (1.5-1.6mm, step cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010795_07720c8f-f8df-4c94-9f93-deb3d7382fb6.jpg?v=1760090374&width=4000)
![Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/15_dc816088-689d-48f9-a277-773d85ed082c.png?v=1759454434&width=1500)
![[Limited to 6 stones] Contains 2 stones in total: 1 gemstone (rough stone) that is actually featured in a gemstone encyclopedia + 1 emerald rough stone.](http://store.karatz.jp/cdn/shop/files/collage_5fd345f1-1646-43a1-b347-1e83dd089a63.png?v=1751925957&width=2000)
Opal 0.123ct loose stone
Sale price¥5,980
Ruby 0.289ct loose stone by Takakikyo
Sale price¥12,800
Mexican Hyalite Opal 2.592ct loose
Sale price¥9,800
![[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA](http://store.karatz.jp/cdn/shop/files/P6095155_97466828-4631-4e90-b4ca-7ff6f8853a18.jpg?v=1686868907&width=3464)
[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA
Sale price¥598,000
Colombian pyrite emerald 8.044ct loose stone
Sale price¥188,000
![[On Sale 2/1 at 10 PM] Mexican Fire Opal 0.218ct Loose (Faceted)](http://store.karatz.jp/cdn/shop/files/P1221603.jpg?v=1769815878&width=4000)
[On Sale 2/1 at 10 PM] Mexican Fire Opal 0.218ct Loose (Faceted)
Sale price¥18,800
![[On Sale 2/1 at 10pm] Colombian Emerald 0.451ct Loose](http://store.karatz.jp/cdn/shop/files/P1221450_64cab9a4-a405-4968-87e0-b89f5d5b8b9d.jpg?v=1769775710&width=2538)
[On Sale 2/1 at 10pm] Colombian Emerald 0.451ct Loose
Sale price¥39,800
![[On Sale 2/1 at 10pm] Mexican Fire Opal 0.281ct Loose](http://store.karatz.jp/cdn/shop/files/P1221546.jpg?v=1769816142&width=4000)
[On Sale 2/1 at 10pm] 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
![[On Sale 2/7 at 10 PM] Brown Diamond 5.2mm/0.561ct Loose Stone (FANCY DARK BROWN, SI2)](http://store.karatz.jp/cdn/shop/files/P1306036.jpg?v=1770005858&width=4000)
![[On Sale 2/7 at 10 PM] Pink Diamond 2.5mm/0.097ct Loose (FANCY PINK, SI2, Princess Cut)](http://store.karatz.jp/cdn/shop/files/P1305992_ed7de143-a178-4ef0-a410-0f51edefc2a9.jpg?v=1770295694&width=2714)
![[On Sale at 10 PM on February 5th] Colombian Cat's Eye Emerald 0.417ct Loose](http://store.karatz.jp/cdn/shop/files/P1305854_588919bf-651b-4a31-a41a-19a81bf4908a.jpg?v=1770208133&width=2872)
![[Available at 10 PM on February 6th] Unheated Pigeon Blood Ruby 4.3mm/0.510ct Loose Stone AIGS](http://store.karatz.jp/cdn/shop/files/P1295030_77318254-4a12-4015-8d9d-7c81161f879a.jpg?v=1770241972&width=2697)
![[Available at 10 PM on 2/6] Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS](http://store.karatz.jp/cdn/shop/files/P1295002_a4c07bbc-fed4-4b03-8a63-aea5e7294089.jpg?v=1770241925&width=4000)
![[On Sale 2/6 at 10pm] Nepalese Bicolor Kyanite 0.742ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1307325_a79e34f7-ccdf-416c-b3ca-9ef12ff02679.jpg?v=1770242202&width=3173)
[On Sale 2/6 at 10pm] Nepalese Bicolor Kyanite 0.742ct Loose Stone
Sale price¥18,800
![[On Sale 2/7 at 10pm] Mexican Opal (Faceted) 0.208ct Loose](http://store.karatz.jp/cdn/shop/files/P1306870.jpg?v=1770295695&width=4000)
[On Sale 2/7 at 10pm] Mexican Opal (Faceted) 0.208ct Loose
Sale price¥9,800
![[On sale at 10pm on 2/4] Ruby 3.3mm/0.171ct Loose](http://store.karatz.jp/cdn/shop/files/P1306822.jpg?v=1770036000&width=4000)
[On sale at 10pm on 2/4] Ruby 3.3mm/0.171ct Loose
Sale price¥39,800
![[On Sale 2/4 at 10pm] Mexican Fire Opal 0.362ct Loose](http://store.karatz.jp/cdn/shop/files/P1306794.jpg?v=1770035999&width=4000)
[On Sale 2/4 at 10pm] Mexican Fire Opal 0.362ct Loose
Sale price¥15,800
![[On Sale 2/7 at 10pm] Colombian Emerald Pair, 0.243ct](http://store.karatz.jp/cdn/shop/files/P1306580.jpg?v=1770007711&width=4000)
[On Sale 2/7 at 10pm] Colombian Emerald Pair, 0.243ct
Sale price¥69,800
![[On Sale 2/3 at 10pm] Colombian Emerald 0.159ct Loose](http://store.karatz.jp/cdn/shop/files/P1306642_03706ec1-4993-4a0a-980a-4a7e5442a77b.jpg?v=1770036750&width=2886)
[On Sale 2/3 at 10pm] Colombian Emerald 0.159ct Loose
Sale price¥47,800
![[Available at 10 PM on 2/8] Unheated Pigeon Blood Ruby 0.310ct Loose Stone AIGS](http://store.karatz.jp/cdn/shop/files/P1294908.jpg?v=1770418701&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.