Congo Bicolor Tourmaline 3.429ct Loose
Sale price¥128,000
Colombian mica in emerald 1.940ct loose
Sale price¥49,800
Colombian mint color emerald 0.297ct loose stone
Sale price¥9,800
Colombian oil-free emerald 0.220ct loose GIA
Sale price¥248,000
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥69,800
Colombian Trapiche emerald 0.418ct rough stone
Sale price¥39,800
[E33 Shinjuku] Colombian Emerald 0.512ct Loose Stone (Silky Type)
Sale price¥14,800
Colombian emerald cat's eye 0.190ct loose
Sale price¥15,800
Colombian emerald 1.435ct rough stone
Sale price¥18,800
Colombian emerald 0.203ct loose stone with certificate
Sale price¥98,000
Colombian emerald 0.167ct loose stone with jewel
Sale price¥49,800
Colombian emerald 0.145ct loose stone with precious stone
Sale price¥39,800
Colombian emerald 0.111ct loose stone with precious stone
Sale price¥29,800
Cornflower Blue Sapphire 1.080ct Loose AIGS
Sale price¥158,000
Cornflower blue sapphire 0.490ct loose stone
Sale price¥98,000
Kenyan Gold Sheen Sapphire 4mm/0.438ct Loose
Sale price¥55,800
[E33 Shinjuku] Goshenite 6.1mm/0.905ct loose stone
Sale price¥8,800
Chrysoberyl cat's eye 1.497ct loose
Sale price¥22,800
Green tourmaline 1.190ct loose stone
Sale price¥98,000
Chrysoberyl cat's eye 0.904ct loose
Sale price¥12,800
Green tourmaline 0.389ct loose
Sale price¥9,800
Cambodian Blue Zircon (Ratanakiri Blue) 6.771ct Loose
Sale price¥168,000
Cambodian blue zircon (Ratanakiri blue) 2.143ct loose
Sale price¥29,800
Cambodian Blue Zircon 0.348ct Loose Stone
Sale price¥6,980
Cambodian colorless zircon 1.212ct loose stone
Sale price¥15,800
Cambodian colorless zircon 0.533ct loose stone
Sale price¥5,980
[12558655] Calcite 1.185ct loose stone
Sale price¥23,800
Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2)
Sale price¥69,800
Canadian Catapleite 0.298ct Loose Stone, Japan-Germany Mirror
Sale price¥49,800
Strawberry quartz from Kazakhstan 1.536ct loose
Sale price¥12,800
Strawberry quartz from Kazakhstan 0.815ct loose
Sale price¥6,980
Oregon Sunstone from the United States 0.276ct loose stone
Sale price¥7,980
Opal 1.242ct loose stone
Sale price¥19,800
![[E33 Shinjuku] Opal 0.123ct loose stone](http://store.karatz.jp/cdn/shop/files/P1010643_c1659d41-1f7c-48d9-a787-8ec08a15b079.jpg?v=1745021968&width=3275)
[E33 Shinjuku] Opal 0.123ct loose stone
Sale price¥0
Australian Rainbow Lattice Sunstone 0.590ct Loose
Sale price¥12,800
Australian Rainbow Lattice Sunstone 0.795ct Loose Stone
Sale price¥8,800
Australian Rainbow Lattice Sunstone 0.481ct Loose Stone
Sale price¥12,800
Australian black opal 2.407ct loose
Sale price¥59,800
[12551529] Australian black opal 2.233ct loose stone
Sale price¥69,800
Australian black opal 0.559ct loose
Sale price¥12,800
Australian black opal 0.650ct loose
Sale price¥18,800
Violet spinel 0.301ct loose
Sale price¥9,800
Australian Opal 0.371ct Loose
Sale price¥8,800
Indian Moonstone 8mm/1.879ct Loose
Sale price¥6,980
Indian Moonstone 6.2mm/0.749ct Loose
Sale price¥7,980
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.