Sri Lankan Unheated Star Sapphire 0.238ct Loose
Sale price¥3,980
0.354ct Unheated Star Sapphire Loose Stone from Sri Lanka
Sale price¥6,980
Unheated Sri Lankan Star Sapphire 0.361ct Loose
Sale price¥6,980
Loose 0.485 ct Sri Lankan Blue Sapphire
Sale price¥9,800
0.329ct Loose Blue Sapphire from Sri Lanka
Sale price¥15,800
0.133ct Loose Blue Sapphire from Madagascar
Sale price¥18,800
Brazilian Morganite 0.460ct Loose
Sale price¥6,980
0.455ct Loose Madagascar Blue Sapphire
Sale price¥25,800
Brazilian Aventurine Aquamarine 4.2mm/0.239ct Loose Stone
Sale price¥8,800
Tanzanian Rhodolite Garnet 0.609ct Loose Gemstone
Sale price¥8,800
Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose
Sale price¥15,800
Tanzanian Zoisite 1.290ct Loose Stone with Appraisal
Sale price¥19,800
Parasitic Peridot 0.220ct Loose Stone with Certificate
Sale price¥79,800
0.442ct Loose Blue Sapphire from Sri Lanka
Sale price¥22,800
0.345ct Loose Blue Sapphire from Sri Lanka
Sale price¥12,800
Bicolor Euclase from Zimbabwe 0.254ct Loose Gemstone
Sale price¥55,800
0.078 ct Zimbabwean Bi-color Euclase Loose Gemstone
Sale price¥17,800
0.176 ct Zimbabwean Bicolor Euclase Loose Gemstone
Sale price¥38,800
Zimbabwe Euclase 3.0mm/0.131ct Loose
Sale price¥28,800
![[On sale May 4th at 10 PM JST] Zimbabwe Euclase 0.102ct Loose](http://store.karatz.jp/cdn/shop/files/P4094597_97035c25-f472-4532-a55b-07eca457bd7b.jpg?v=1777760311&width=3079)
[On sale May 4th at 10 PM JST] Zimbabwe Euclase 0.102ct Loose
Sale price¥22,800
Madagascar Grandidierite 0.132ct Loose Stone
Sale price¥26,800
Grandidierite from Madagascar 0.115ct loose stone
Sale price¥24,800
![[On sale May 4th, 10 PM] Grandidierite from Madagascar 0.092ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P4074036_ecb92780-10b5-41d4-9693-4d1c48e94cb6.jpg?v=1777760549&width=2795)
![[On Sale May 4th at 10 PM] Madagascar Grandidierite 0.090ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P4074010_3b6aee6d-0726-4d5b-ba9b-3d28eb823ac5.jpg?v=1777760608&width=2692)
[On Sale May 4th at 10 PM] Madagascar Grandidierite 0.090ct Loose Stone
Sale price¥18,800
![[Sale on May 4th at 10 PM] Madagascar Grandidierite 0.086ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P4073966_029012b1-2195-49be-997e-1e393d3778db.jpg?v=1777760660&width=2634)
[Sale on May 4th at 10 PM] Madagascar Grandidierite 0.086ct Loose Stone
Sale price¥17,800
Peruvian Bicolor Blue Opal 4.379 ct Loose Gemstone
Sale price¥6,980
![[Sales End Date: Tuesday, June 30] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration: Gemologist's Logo Loupe & Strap Set (with explanation card)](http://store.karatz.jp/cdn/shop/files/6_b363de95-7013-42ce-bbff-d65d682aef4b.png?v=1776066278&width=2048)
![[Sales end on Tuesday, June 30] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration Mini Character Can Badge](http://store.karatz.jp/cdn/shop/files/OEM-20260213-BAT57-01.jpg?v=1775529463&width=3889)
![[Sales end Tuesday, June 30] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration Mini Character Acrylic Keychain](http://store.karatz.jp/cdn/shop/files/OEM-20260213-ACK-01.jpg?v=1775529096&width=3889)
![[Sales end on Tuesday, June 30] TV Anime "Dr. STONE" x Jewelry Store KARATZ Collaboration Mini Character Acrylic Stand](http://store.karatz.jp/cdn/shop/files/OEM-20260213-_-01.jpg?v=1775528616&width=3889)
![[Sales end Tuesday, June 30] TV Anime "Dr. STONE" x Jewelry Store KARATZ Collaboration Can Badge](http://store.karatz.jp/cdn/shop/files/OEM-20260115-BAT-01.jpg?v=1775451713&width=3889)
![[Sales End on Tuesday, June 30] TV Anime "Dr.STONE" × KARATZ Jewelry Store Collaboration Acrylic Keychain](http://store.karatz.jp/cdn/shop/files/OEM-20260115-ACK-01.jpg?v=1775451459&width=3889)
![[Sales end on Tuesday, June 30] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration Acrylic Stand](http://store.karatz.jp/cdn/shop/files/OEM-20260115-AFDDP_01_07.jpg?v=1775450304&width=3889)
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone
Sale price¥39,800
Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS
Sale price¥258,000
Madagascar Apatite 19.863ct Loose
Sale price¥128,000
Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1)
Sale price¥34,800
Cambodian Blue Zircon (Ratanakiri Blue) 1.205ct Loose Stone
Sale price¥18,800
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.