![[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/collage001.png?v=1783054187&width=3000)
![[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_7372b521-c1f6-4b48-8378-4ef004170822.png?v=1782796302&width=3000)
[12563413 Posted] Colombian Emerald 0.158ct Loose Stone
Sale price¥18,800
[Listed as 12563069] Padparadscha Sapphire 0.416ct Loose Gemstone
Sale price¥98,000
[Listed in 12563071] Padparadscha Sapphire 0.156ct Loose Stone
Sale price¥29,800
[12563070 listed] Padparadscha Sapphire 0.206ct Loose Stone
Sale price¥39,800
[12563415 posted] Colombian Emerald 0.147ct Loose Stone
Sale price¥12,800
[Listed as 12563417] Mozambique Ruby 0.415 ct Loose Stone
Sale price¥15,800
[Published on 12563414] Colombian Emerald 0.167ct Loose
Sale price¥24,800
![[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT](http://store.karatz.jp/cdn/shop/files/P6053727_f77e1730-ec98-4039-bda1-0e7c577365e3.jpg?v=1783218561&width=3330)
[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT
Sale price¥158,000
![[Lottery Sale_0612_08] Unheated Purple Sapphire 0.775ct Loose Gemstone - Houseki Kyo](http://store.karatz.jp/cdn/shop/files/P6101100_8cb87327-3031-493d-9f3a-8a24fe5e4685.jpg?v=1783218909&width=3215)
![[Listed as 12563495] Euclase from Zimbabwe, 0.053ct Loose](http://store.karatz.jp/cdn/shop/files/P7019735_291a5a7c-e700-426c-8223-c9dd468f11be.jpg?v=1783219206&width=2852)
[Listed as 12563495] Euclase from Zimbabwe, 0.053ct Loose
Sale price¥12,800
![[Published on 12563484] Madagascar Grandidierite 0.065ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7010260_740bd7c8-ce74-4675-9c9d-4967fce480c7.jpg?v=1783219354&width=3062)
[Published on 12563484] Madagascar Grandidierite 0.065ct Loose Stone
Sale price¥15,800
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.