Birthstone list
![[Koshu Precious Stones Plusthree] Sri Lankan Hessonite Garnet 0.99ct Loose Color "Collaboration" Patch](http://store.karatz.jp/cdn/shop/files/099ct-663728.jpg?v=1745883466&width=1038)
Colombian emerald 8.90ct rough stone
Sale price¥45,800
Dominican Republic Conch Pearl 0.775ct Loose (with flame pattern)
Sale price¥39,800
Brazilian Paraiba tourmaline in quartz 3.678ct loose
Sale price¥9,800
Brazilian bicolor tourmaline 12.842ct loose
Sale price¥298,000
Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose
Sale price¥148,000
Russian demantoid garnet (horsetail recognized) 5.3mm/0.692ct loose
Sale price¥128,000
Colombian emerald cat's eye 0.083ct loose
Sale price¥6,980
Colombian emerald cat's eye 0.078ct loose
Sale price¥6,980
Brazilian Pink Imperial Topaz 1.511ct Loose Japanese-German Edition
Sale price¥69,800
Brazilian Pink Imperial Topaz 0.909ct Loose Japanese-German Edition
Sale price¥39,800
Nigerian pink tourmaline 1.527ct loose stone
Sale price¥18,800
Mexican Hyalite Opal 4.9mm/0.348ct Loose
Sale price¥12,800
Mexican Hyalite Opal 6.9mm/1.134ct Loose
Sale price¥25,800
Mexican Hyalite Opal 5.2mm/0.439ct Loose Stone
Sale price¥12,800
Mexican Hyalite Opal 4.8mm/0.304ct Loose Stone
Sale price¥9,800
Mexican Hyalite Opal 5.0mm/0.378ct Loose Stone
Sale price¥11,000
Brazilian pyrope almandine garnet 0.925ct loose stone
Sale price¥9,800
Brazilian Aquamarine 0.546ct Loose Stone
Sale price¥8,800
Brazilian Aquamarine 0.499ct Loose Stone
Sale price¥7,980
Brazilian Aquamarine 0.362ct Loose Stone
Sale price¥8,800
Brazilian Aquamarine 0.578ct Loose Stone
Sale price¥12,800
Brazilian Madeira Citrine 0.867ct Loose Stone
Sale price¥9,800
Brazilian Madeira Citrine 0.564ct Loose Stone
Sale price¥8,800
Brazilian Madeira Citrine 0.602ct Loose Stone
Sale price¥8,800
Brazilian Madeira Citrine 0.672ct Loose Stone
Sale price¥6,980
Brazilian Madeira Citrine 4.7mm/0.414ct Loose Stone
Sale price¥8,800
Brazilian Madeira Citrine 0.489ct Loose Stone
Sale price¥7,980
Bolivian Ametrine 3.751ct loose stone
Sale price¥9,800
Tanzanian Rhodolite Garnet 0.627ct Loose Stone
Sale price¥8,800
Brazilian Pink Tourmaline 0.361ct Loose Stone
Sale price¥9,800
Zambian Canary Yellow Tourmaline 0.25ct Loose Stone
Sale price¥9,800
Pt950 Tanzanian Tanzanite 1.357ct Blue Zircon Pink Sapphire Ring
Sale price¥128,000
Tanzanite rough stone from Tanzania 5.930ct
Sale price¥5,980
Tanzanian bicolor sapphire 0.262ct loose stone
Sale price¥19,800
Brazilian Paraiba tourmaline 0.229ct loose (CuO:0.6%, MnO:1.0%)
Sale price¥35,800
Cornflower Blue Sapphire 4.9mm/0.55ct Loose AIGS
Sale price¥110,000
Sri Lankan bicolor sapphire 0.244ct loose stone
Sale price¥12,800
[Sakura Shape] Brazilian Green Tourmaline 6.7mm/1.057ct Loose Patch
Sale price¥39,800
Paraiba tourmaline from Brazil 3.1mm/0.151ct loose (CuO:1.1%, MnO:3.8%)
Sale price¥29,800
Particolor Tourmaline 1.121ct Loose Stone (Tricolor)
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.