![[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_03] Diamond (H&C) 4.5mm/0.353ct Loose Stone (E, VS-2, 3Excellent H&C) Includes CGL Report & Sarine Light Report](http://store.karatz.jp/cdn/shop/files/collage_7353bfb2-13a0-4dee-a51b-4d82f013cf8b.png?v=1790579200&width=2000)
![[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_04] Diamond (H&C) 4.5mm/0.345ct Loose Stone (G, VS-2, 3Excellent H&C) CGL Certified](http://store.karatz.jp/cdn/shop/files/collage_b787ec7d-3be5-4131-a28c-bb00fd5e56d4.png?v=1790579244&width=2000)
![[Deadline: Sat, Oct 3, 10:00 AM: Lottery Sale ①_06] Internally Flawless Diamond 0.340ct Loose Stone (D, IF, Marquise Cut) GIA](http://store.karatz.jp/cdn/shop/files/P9251483.jpg?v=1790325912&width=4000)
![[Deadline: Sat, Oct 3, 10:00 AM: Lottery Sale ①_01] Diamond 3.7mm/0.200ct Loose Stone (E, VS-2, 3Excellent) GIA](http://store.karatz.jp/cdn/shop/files/P9030290_7600a6f2-a01a-415b-a020-f2e8ec9dbf4e.png?v=1793122602&width=3125)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1816.40.11.png?v=1792309234&width=1354)
![[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_b2f01695-75fd-4298-8a73-94a601d5696d.png?v=1792308335&width=2000)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_8aa8434b-4d77-43c7-a85e-6c18e245fcb8.png?v=1792307844&width=2000)
![[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_ff6f1f8b-1da1-4ee4-a56f-084bc3e530f4.png?v=1792306445&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.