![[On Sale 5/28 10PM] Bungo and Alchemist x KARATZ Collaboration Jewelry - Vol. 4: Bungo Ring [Sakaguchi Ango Model Ring]](http://store.karatz.jp/cdn/shop/files/bungou_pt4_bnr_03b_1080x1080_0583a7bf-27be-4ac0-b5cf-9654b94847b7.jpg?v=1779787573&width=1080)
![[On Sale May 28th at 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry: Vol. 4 - Bungo Ring [Chuya Nakahara Model Ring]](http://store.karatz.jp/cdn/shop/files/bungou_pt4_bnr_03a_1080x1080_188850d0-864d-433e-aee2-4c42cc37704d.jpg?v=1779787581&width=1080)
[On sale May 24th at 10 PM] Australian Black Opal 0.522ct Loose Stone
Sale price¥18,800
[Sale on May 24th at 10 PM JST] Australian Black Opal 0.216ct Loose
Sale price¥11,000
[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
[On sale 5/22 at 10 PM] Synthetic Alexandrite 1.320ct Loose Gemstone
Sale price¥19,800
[On Sale May 24, 10 PM JST] Synthetic Alexandrite Loose Stone 0.885ct
Sale price¥18,800
[On sale May 15th at 10 PM] Synthetic Alexandrite 1.355ct Loose Stone
Sale price¥24,800
Sky blue topaz 10.967ct loose
Sale price¥18,800
Brazilian alexandrite 0.060ct loose
Sale price¥11,000
Brazilian alexandrite 0.058ct loose
Sale price¥11,000
Brazilian alexandrite 0.061ct loose
Sale price¥12,800
Pink tourmaline 6.1mm/1.031ct loose stone
Sale price¥12,800
![[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 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)
Brazilian Romanesite in Amethyst 7.083ct Loose Stone
Sale price¥15,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥12,800
German Awinite 0.056ct loose stone
Sale price¥22,800
Tanzanian Kornerupine 0.201ct loose stone
Sale price¥14,800
Tanzanian Kornerupine 0.249ct loose stone
Sale price¥15,800
Tanzanian Kornerupine 0.210ct loose stone
Sale price¥11,000
Tanzanian Kornerupine 0.300ct Loose Stone
Sale price¥18,800
Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone
Sale price¥18,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Australian black opal 0.650ct loose
Sale price¥15,800
Brazilian Flower Quartz 7.064ct Loose Stone
Sale price¥14,800
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.