Birthstone list
[10/4, 10:00 PM Sale] Synthetic Ruby 1.182ct Loose Stone
Sale price¥12,800
[Available 10/4, 10 PM] Synthetic Ruby 1.803ct Loose Gemstone
Sale price¥18,800
[On sale 10/4 at 22:00] Brazilian Amethyst 2.984ct Loose Gemstone
Sale price¥11,800
[Available 10/4, 10 PM] Brazilian Amethyst 3.842ct Loose Gemstone
Sale price¥12,800
[10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone
Sale price¥9,800
[Available 10/4, 10 PM] Brazilian Amethyst 4.850ct Loose Gemstone
Sale price¥12,800
![[Available 10/4 at 10 PM] 《Limited to 11 stones》 Garnet Gacha including Russian Demantoid Garnet (normally 69,800 yen) (plus 1 Mint Garnet stone included) 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_11aebb72-52ff-4ef1-aba4-55dceae9ea72.png?v=1790994721&width=2000)
![[Available 9/27 at 10:00 PM] 《Limited to 15 stones》 Brazilian Bicolor Tourmaline (Cabochon Cut) Gacha Loose Stone 《Multi-purchase discount available》](http://store.karatz.jp/cdn/shop/files/P9240082_afd1ff21-66cc-46e6-8ebd-a7c2e5189229.jpg?v=1790391764&width=4000)
![[Available 9/22, 10 PM] 《Limited to 3 stones》 Imperfect Andesine Labradorite (Rainbow Moonstone, Sanje Milky Way Star Cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_be725ed2-42a5-4729-950d-43d916aa014e.png?v=1790989750&width=2000)
![[Available 10/3 at 10 PM] 《1 Stone Only》 Pink Diamond (0.184ct, 3.5mm, I-1, Fancy Light Pink, with sorting) - Regular price 110,000 JPY 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA030424_a6f46ddd-317e-4f48-a15e-8db9fecacc1b.jpg?v=1790995953&width=3193)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_54f1201f-a7d6-499e-81e2-40cbbbfb1f86.png?v=1789795072&width=2000)
![[10/4, 10 PM Release] <<limited sets>> K18 Akoya Pearl 5-Pearl Line Earrings with Appraisal Certificate <<multi-purchase discount available>></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_7b1b10ca-7fb3-400d-bdde-2192e0840d3d.png?v=1791001973&width=2000)
![[On sale 10/3 at 10 PM] Diamond Gacha (all stones include sorting) featuring 2 diamonds that reveal hearts under a scope (0.20ct, 0.16ct) / Limited to 6 stones available / Multi-purchase discount available](http://store.karatz.jp/cdn/shop/files/collage_8dd34225-c348-4e2e-b868-70671749f2d9.png?v=1791005699&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.