![[Sale on 5/17 at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.6%, MnO: 2.8%)](http://store.karatz.jp/cdn/shop/files/PC060216_faed4771-d083-4ba2-874c-ff26a6b9446c.jpg?v=1702080534&width=3190)
![[On sale May 17th, 10 PM] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 2.4%, MnO: 2.5%)](http://store.karatz.jp/cdn/shop/files/PC060096_cbbead0f-f658-466d-bfe8-f353822160e0.jpg?v=1702421084&width=3613)
![[On sale May 17th, 10 PM JST] Brazilian Paraiba Tourmaline 0.050ct Loose Stone (CuO: 1.9%, MnO: 3.6%)](http://store.karatz.jp/cdn/shop/files/PC060064_986e097c-d9d4-4d12-bbe1-aab610692eee.jpg?v=1702421170&width=3252)
![[On sale May 16, 10 PM JST] Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO:1.6%, MnO:2.9%)](http://store.karatz.jp/cdn/shop/files/PC060034_845cab0d-64a9-4b88-8e21-86048c1b4681.jpg?v=1702168763&width=3509)
![[For Sale 10:00 PM May 16th] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 1.6%, MnO: 3.3%)](http://store.karatz.jp/cdn/shop/files/PC060004_43d6b30d-df57-4983-b854-e2aa9731b664.jpg?v=1702168845&width=3394)
Tanzanian Chrome Tourmaline 0.522ct Loose Stone
Sale price¥3,980
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥59,800
Salt and pepper diamond 0.446ct loose
Sale price¥39,800
Pink tourmaline 6.1mm/1.031ct loose stone
Sale price¥12,800
Pink tourmaline 0.466ct loose
Sale price¥8,800
[Colorful] Pt900 Diamond 0.65ct Pendant Top
Sale price¥89,800
![[On sale May 14 at 10 PM] Colorful WISH UPON A STAR® 3.5mm/0.166ct/F/VS1 Diamond with Certificate](http://store.karatz.jp/cdn/shop/files/collage_602f7523-6cd3-47f0-8a9e-92663bee40ad.png?v=1778577187&width=4000)
[On sale May 10th at 10 PM] Tanzanian Tanzanite 0.406ct Loose Stone
Sale price¥12,800
[Sales begin May 18 at 10 PM JST] [Colorflee] Pt900 Diamond 0.50ct Ring
Sale price¥79,800
![[On sale May 3rd at 10 PM] Pink Diamond 0.137ct Loose (FANCY DEEP BROWNISH PINK, I-1)](http://store.karatz.jp/cdn/shop/files/32501866_02.jpg?v=1775722654&width=1200)
Loose Brown Diamond 0.290ct (FANCY BROWN, SI-2)
Sale price¥15,800
Diamond 3.7mm/0.318ct Loose (F, SI-1, Princess Cut)
Sale price¥49,800
Colombian Trapiche Emerald 0.422ct Loose
Sale price¥18,800
Bicolor Tanzanite 1.677ct rough stone
Sale price¥7,980
Bicolor Tanzanite 5.582ct rough stone
Sale price¥18,800
[On sale 5/27 10 PM] Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood)
Sale price¥39,800
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.