![[/ On sale at 10pm] [Limited to 18 stones] Zircon Gacha - Win Koshu Precious Stones, Clover In, and Sakura Shapes [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/4_6ef67a3b-230e-4894-a645-568136e61d5d.png?v=1765360500&width=4000)
![[On Sale 12/19 at 10 PM] [Only 3 left] Fancy or Fancy Intense pink diamond melee (1.0mm, round cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/S__225935380_a6b0d102-29b8-47f5-b54c-1c4192c6a30f.jpg?v=1766036992&width=1117)
![Gem Gacha💎 [Sanjay] Tanzanian Spinel (1 in 3 will be a Red Spinel) Loose Stone (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/collage_514bc053-4954-47b7-8221-98c1c0bf765d.png?v=1719542058&width=2000)
![[Sales Start November 2nd at 10 PM] Win an 8.16ct Sky Blue Topaz from Koshu Kiriko (Sakura Kiriko) and more in the November Birthstone Topaz Lottery! 💎 {Multiple Purchase Discounts Available}](http://store.karatz.jp/cdn/shop/files/collage_683e1d28-a7c3-4109-868d-479fec634702.png?v=1762054840&width=2250)
![[On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PB200371_c3076d59-ddd4-44cd-a2bc-c2c13f78b6f3.jpg?v=1763819038&width=3268)
![[Available at 10 PM on December 21st] Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/7_f9f34301-eb3e-4d15-9da0-8f6e42a390b4.png?v=1766104838&width=2000)
[Dandelion Cut] Madagascar Sphene 6.0mm/0.935ct Loose Stone
Sale price¥55,800
Dandelion Cut Andalusite from Spain, 6.0mm/0.835ct Loose Stone
Sale price¥55,800
![Limited to 6 stones: One loose, oil-free emerald from Russia (3.2mm, round cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010821_c88ac283-022d-4a22-ac64-b6108721720c.jpg?v=1760316089&width=3553)
![[On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/2ce9f9727de9532a55237668af9f2b6d_e4813415-0cbb-4832-91b8-0cb2c6b767c8.png?v=1761375345&width=2000)
![[On sale at 10 PM on December 20th] [Limited to 11 stones] Diamond Gacha including VVS/4mm, VS/3mm, etc. worth ¥40,000 [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_25f32d41-70c6-4327-9a7b-a8542eb4094f.png?v=1765949321&width=2250)
![[On sale 11/29 at 10 PM] [Limited to 10 stones] Diamond Gacha including 3.2mm/F/VVS-1/EXCELLENT (H&C) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/68ad2cd6bb28522e6c281ee0201ddbf6.png?v=1763858496&width=2000)
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.