Yellow diamond 2.6mm loose (equivalent to VS class)
Sale price¥12,800
![[Available at 10 PM on August 31st] [Limited to 9 stones] Brazilian Rainbow Aquamarine Loose Stone (Average 1.0 carat, Pear Sheep Cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_a4d9bef3-5745-4730-8adf-5950e9068581.png?v=1756459860&width=2000)
![Limited to 8 stones: One loose Brazilian rainbow aquamarine (average 0.9 carat, pear cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_9316de3e-a74f-47cf-b228-cb256a0050fc.png?v=1756458978&width=2000)
[Dandelion Cut] Madagascar Sphene 6.0mm/0.935ct Loose Stone
Sale price¥55,800
[Sakura In-Cut] Madagascar Purple Sapphire 6.0mm/0.943ct Loose Stone
Sale price¥98,000
Dandelion Cut Andalusite from Spain, 6.0mm/0.835ct Loose Stone
Sale price¥55,800
[Clover-in-cut] Brazilian green tourmaline 6.0mm/0.734ct loose stone
Sale price¥49,800
![[Sales start at 10:00 PM on Friday, November 21st] Assassination Classroom x KARATZ Collaboration Korosensei Model Earrings (Single)](http://store.karatz.jp/cdn/shop/files/ansatsu_bnrC_6_1080x1080_acf42c5b-8c28-4dd3-9221-8a31ee35ad32.jpg?v=1760620169&width=1080)
![[Sales start on Friday, November 21st at 10:00 PM] Assassination Classroom x KARATZ Collaboration Korosensei Model Bracelet](http://store.karatz.jp/cdn/shop/files/ansatsu_bnrC_5_1080x1080_a307a391-2381-4edd-a09a-3a2caaa72c1d.jpg?v=1760620220&width=1080)
![[Sales start at 10:00 PM on Friday, November 21st] Assassination Classroom x KARATZ Collaboration Korosensei Model Necklace](http://store.karatz.jp/cdn/shop/files/ansatsu_bnrC_4_1080x1080_0741bcdb-ae86-4e38-b0f0-0551548bb990.jpg?v=1760620220&width=1080)
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.