Birthstone list
Pt950 American Benitoite 0.14ct / Diamond 0.22ct Ring
Sale price¥98,000
Brazilian bicolor tourmaline 0.880ct loose stone
Sale price¥12,800
Mexican cantera opal 27.410ct loose
Sale price¥39,800
Brazilian Madeira Citrine 6.8mm/1.150ct Loose Stone
Sale price¥4,980
[Koshu Precious Stone Cutting] Mexican Fire Opal 1.571ct Loose Patch
Sale price¥69,800
Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone
Sale price¥12,800
Dominican Republic Conch Pearl (with flame pattern) 1.560ct loose
Sale price¥25,800
South African diamond rough stone 0.430ct
Sale price¥9,800
Sri Lankan Star Sapphire 1.028ct Loose
Sale price¥8,800
Sri Lankan Star Sapphire 0.725ct Loose
Sale price¥6,980
Mexican Cantera Opal 1.209ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.394ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.436ct Loose Stone (Rose Cut)
Sale price¥12,800
Brazilian Unheated Bicolor Paraiba Tourmaline 0.105ct Loose GIA
Sale price¥198,000
Vietnam Pink Sapphire 1.690ct Loose GIA
Sale price¥98,000
Royal Blue Sapphire 2.220ct Loose Stone AIGS
Sale price¥458,000
Sri Lankan Blue Sapphire (Ice Blue) 0.271ct Loose (Princess Cut)
Sale price¥12,800
Sri Lankan Rhodolite Garnet 0.244ct Loose Stone, Japan-Germany Scale
Sale price¥8,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Mexican Cantera Opal 11.885ct Loose
Sale price¥49,800
Brazilian Imperial Topaz 0.398ct Loose Stone
Sale price¥12,800
[On sale at 10pm on August 17th] Aquamarine 0.680ct loose stone
Sale price¥14,800
Brazilian Swiss Blue Topaz 1.062ct Loose Stone
Sale price¥9,800
Brazilian bicolor topaz 3.098ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 0.237ct loose stone
Sale price¥8,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Brazilian Green Tourmaline 3.943ct Loose Stone
Sale price¥39,800
Indian Moonstone 3.367ct Loose
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Brazilian Aquamarine 0.176ct Loose Stone
Sale price¥8,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
Tanzanian Almandine Garnet 1.263ct Loose Stone
Sale price¥12,800
Brazilian Paraiba tourmaline 0.171ct loose stone (CuO: 1.7%, MnO: 2.3%)
Sale price¥98,000
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Yellow Diamond (Cabochon Cut) 0.237ct Loose
Sale price¥35,800
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.572ct loose stone (rose cut)
Sale price¥14,800
Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut)
Sale price¥12,800
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.