Synthetic Alexandrite 0.570ct loose stone
Sale price¥18,800
Brazilian rutilated quartz (rutilated quartz) 7.741ct loose stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.794ct Loose Stone
Sale price¥15,800
[Takeshi Yamamoto] Bicolor Smoky Quartz 10.674ct Loose Stone
Sale price¥39,800
Dominican Republic Conch Pearl 1.990ct Loose (with flame pattern)
Sale price¥29,800
Brazilian pyrite in quartz 57.230ct loose stone
Sale price¥25,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 6.020ct Loose Stone
Sale price¥9,800
Kunzite from Afghanistan 8.609ct loose stone
Sale price¥14,800
Indian Star Garnet 14.200ct Loose Stone (6 Rows)
Sale price¥5,980
Mexican Cantera Opal 6.112ct Loose
Sale price¥59,800
Mozambique Almandine Garnet 0.477ct Loose Stone
Sale price¥8,800
Brazilian Rutile Cat's Eye 3.856ct Loose Stone (Red Rutile Quartz)
Sale price¥18,800
Brazilian Rutile Cat's Eye 3.306ct Loose Stone (Red Rutile Quartz)
Sale price¥16,800
Mexican Cantera Opal 14.458ct loose stone (faceted cut)
Sale price¥14,800
Synthetic Opal 2.026ct Loose
Sale price¥19,800
Brazilian Paraiba Tourmaline in Quartz 1.054ct Loose Stone
Sale price¥18,800
Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.133ct Loose Stone
Sale price¥22,800
Brazilian Paraiba Tourmaline in Quartz 1.530ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 3.046ct loose stone
Sale price¥45,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.309ct Loose Stone
Sale price¥12,800
Brazilian Paraiba Tourmaline in Quartz 4.3mm/0.292ct Loose Stone
Sale price¥12,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.328ct Loose Stone
Sale price¥12,800
Sri Lankan Rhodolite Garnet 1.858ct Loose Stone
Sale price¥15,800
Mozambique Almandine Garnet 0.965ct Loose Stone
Sale price¥12,800
Tanzanian Kornerupine 0.616ct loose stone
Sale price¥49,800
Indian Star Garnet 13.260ct Loose Stone (6 Rows)
Sale price¥5,980
Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone
Sale price¥188,000
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
Garden quartz 8.690ct loose
Sale price¥2,980
Indian Star Garnet 11.440ct Loose Stone (6 Rows)
Sale price¥5,980
Mexican Cantera Opal 18.00ct Loose
Sale price¥29,800
![[Koshu Precious Stone Cutting] Fluorite in Quartz 6.420ct Loose Stone [Collaboration] Patch](http://store.karatz.jp/cdn/shop/files/collage_3269a09e-f7e8-4625-a34c-9b27a3584d4b.png?v=1746103198&width=2000)
Tanzanian Almandine Garnet 1.190ct Loose Stone
Sale price¥12,800
Brazilian Dumortierite in Quartz 0.578ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.482ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.652ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.313ct loose stone (faceted cut)
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.154ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Dumortierite in Quartz 55.207ct Rough Stone
Sale price¥8,800
Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose
Sale price¥148,000
Brazilian Garden Quartz 15.7mm/12.860ct Loose Stone
Sale price¥4,980
Brazilian Dumortierite in Quartz 2.484ct loose stone
Sale price¥9,800
Brazilian pyrope almandine garnet 0.925ct loose stone
Sale price¥9,800
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.