![[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)
![[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)
![[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)
![[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 at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.3%, MnO: 2.7%)](http://store.karatz.jp/cdn/shop/files/PC060276_1b9a5a08-e995-4c6b-8d72-51429efc4673.jpg?v=1702080791&width=3163)
![[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)
Sillimanite from Sri Lanka 1.704ct loose stone
Sale price¥18,800
Sphene 0.503ct loose stone
Sale price¥5,980
Pink tourmaline 1.157ct loose stone
Sale price¥12,800
Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose
Sale price¥8,800
Brazilian Flower Quartz 7.064ct Loose Stone
Sale price¥14,800
Australian black opal 0.650ct loose
Sale price¥15,800
[Sales begin May 18 at 10 PM JST] [Colorflee] Pt900 Diamond 0.50ct Ring
Sale price¥79,800
Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose
Sale price¥18,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone
Sale price¥18,800
Namibian Jeremejevite 0.261ct loose stone
Sale price¥45,800
Tanzanian Chrome Tourmaline 0.522ct Loose Stone
Sale price¥3,980
Zoisite 0.216ct loose stone (heart shape)
Sale price¥7,980
Zoisite 0.247ct loose stone (heart shape)
Sale price¥7,980
Zoisite 0.162ct loose stone (heart shape)
Sale price¥7,980
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥59,800
German Awinite 0.070ct loose stone
Sale price¥29,800
German Awinite 0.056ct loose stone
Sale price¥22,800
Brazilian Flower Quartz 4.666ct Loose Stone
Sale price¥9,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥12,800
Brazilian Romanesite in Amethyst 7.083ct Loose Stone
Sale price¥15,800
[On sale 5/21 at 10 PM] Synthetic Alexandrite 0.808ct Loose Stone
Sale price¥18,800
[On sale May 21st at 10 PM] Synthetic Alexandrite 1.241ct Loose Gemstone
Sale price¥25,800
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.