![[On sale from 10pm on 2/11] Diamond rough (makeable) 0.279ct rough](http://store.karatz.jp/cdn/shop/files/20260201_P2036870_cc6664e0-bc15-48e2-bd48-add5bad299ac.jpg?v=1770679178&width=2766)
[On sale from 10pm on 2/11] Diamond rough (makeable) 0.279ct rough
Sale price¥9,800
![[On sale from 10pm on 2/11] Diamond rough (makeable) 0.284ct rough](http://store.karatz.jp/cdn/shop/files/20260201_P2036828.jpg?v=1770679177&width=4000)
[On sale from 10pm on 2/11] Diamond rough (makeable) 0.284ct rough
Sale price¥12,800
![[On Sale 2/10 at 10pm] Colombian Emerald with Pyrite, 2.380ct Rough](http://store.karatz.jp/cdn/shop/files/P2036794.jpg?v=1770507819&width=4000)
[On Sale 2/10 at 10pm] Colombian Emerald with Pyrite, 2.380ct Rough
Sale price¥39,800
![[On Sale at 10 PM on February 10th] Colombian Emerald 8.90ct Rough Stone](http://store.karatz.jp/cdn/shop/files/P2036690_89ce4dde-b080-4b35-8349-9757a69e0a89.jpg?v=1770507062&width=2986)
[On Sale at 10 PM on February 10th] Colombian Emerald 8.90ct Rough Stone
Sale price¥69,800
![[On Sale 2/8 at 10pm] Australian Iron Opal 17.439ct Loose](http://store.karatz.jp/cdn/shop/files/P2036650.jpg?v=1770506812&width=4000)
[On Sale 2/8 at 10pm] Australian Iron Opal 17.439ct Loose
Sale price¥18,800
![[On Sale 2/8 at 10pm] Australian Boulder Opal 6.152ct Loose](http://store.karatz.jp/cdn/shop/files/P2036602.jpg?v=1770506281&width=4000)
[On Sale 2/8 at 10pm] Australian Boulder Opal 6.152ct Loose
Sale price¥18,800
![[On Sale 2/8 at 10 PM] Canadian Green Diamond Rough (Sawable) 0.338ct Rough (with Trigon)](http://store.karatz.jp/cdn/shop/files/P1190545.jpg?v=1770415881&width=4000)
![[On Sale 2/8 at 10 PM] Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon)](http://store.karatz.jp/cdn/shop/files/P1190612.jpg?v=1769224707&width=4000)
![[On Sale 2/7 at 10 PM] Colombian Oil-Free Emerald (NONE) 2.8mm/0.070ct Loose GIA](http://store.karatz.jp/cdn/shop/files/P1201183.jpg?v=1769074767&width=4000)
[On Sale 2/7 at 10pm] Colombian Oil-Free Emerald 0.220ct Loose GIA
Sale price¥248,000
![[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery](http://store.karatz.jp/cdn/shop/files/collage_c90ad5e1-b47a-49f9-b7d7-d75e04cd883a.png?v=1724920180&width=2000)
![Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/products/collage_6be597c0-338c-4671-838a-8b1e66598b68.jpg?v=1681976274&width=4000)
!["PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond)](http://store.karatz.jp/cdn/shop/files/56c5def9d6dd327eef15171e9337e809.png?v=1747953946&width=3518)
1 green opal from Amazon《Discount available for multiple purchases》
Sale price¥2,980
!["PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Yayoi Rokuitsuka Model] "Ice Blue Sapphire"](http://store.karatz.jp/cdn/shop/files/f76800a131d00c2a53ddcb66deb272d4.png?v=1747953940&width=3519)
Diamond loose/certificate transfer fee
Sale price¥5,000
![[Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set](http://store.karatz.jp/cdn/shop/files/collage_057412df-b83f-456f-b7c8-ff5d87550e46.png?v=1743666005&width=4000)
Diamond loose sorting transition fee
Sale price¥3,000
![[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)
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.