Cornerpine 0.400ct rough stone
Sale price¥2,980
Cornerpine 0.730ct rough stone
Sale price¥2,980
Cornelpine 0.490ct rough stone
Sale price¥2,980
Sea blue chalcedony 6.964ct loose
Sale price¥7,980
![[Available at 10 PM on September 7th] Limited Quantity Gem Gacha 💎 Win 1 or 2 gems, including pink diamonds and 46ct cantera opals. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/collage_4adc8ce7-8178-47a9-a0ef-2cf85454ece6.png?v=1757206237&width=2000)
![[On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010012_7b06a2e7-6557-46f8-94d4-32ff2a2d9f0b.jpg?v=1745885255&width=4000)
![[Available at 10 PM on 10/11] [Limited to 15 stones] Blue Stone Gacha (Top Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_990d7674-31c7-4cf4-99fb-32b47ab56a31.png?v=1759991382&width=2250)
![[On Sale 10/13 at 10 PM] [Limited to 10 Stones] Bicolor Gacha 💎 Includes two Zimbabwean euclase stones (average 0.088 carats), a 1.03 carat bicolor sapphire, a bicolor chrysoberyl, and more. [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_3.png?v=1760322548&width=2250)
![[Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/2025-05-158.54.00.png?v=1747266901&width=1279)
![[Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/collage_b7a430e1-0f20-4abd-a80a-4f266df831e4.png?v=1745377088&width=2000)
![[Available at 10 PM on September 21st] Rainbow Garnet (Rose Cut, 3.0-5.5mm) Loose Stone from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/5_6da161f9-2525-4fc5-a277-9a7adb122a53.png?v=1758169841&width=4000)
![[On sale September 5th at 10 PM] [Only one left] Russian Demantoid Garnet Loose Stone (Oval Cut, Approx. 3 x 2mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/S__218431492_56620792-286c-4261-91b5-7c3159b666aa.jpg?v=1756867553&width=1280)
![[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)
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.