Mozambique Pink Sapphire 0.276ct Loose (Hot Pink Sapphire)
Sale price¥9,800
Salt and pepper diamond 0.446ct loose
Sale price¥39,800
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
Non-Oil Emerald 1.370ct Loose GIA
Sale price¥1,580,000
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥59,800
[On sale June 7, 10 PM JST] Australian Boulder Opal 12.216ct Loose Stone
Sale price¥15,800
[On sale June 7th at 10 PM] Australian Boulder Opal 41.775ct Loose Stone
Sale price¥19,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥12,800
Colombian emerald 0.145ct loose stone with precious stone
Sale price¥29,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Australian black opal 0.650ct loose
Sale price¥15,800
Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose
Sale price¥8,800
[COLORFUL] Pt900 Diamond 1.00ct Pendant (Necklace)
Sale price¥49,800
Colombian Trapiche emerald 0.418ct rough stone
Sale price¥39,800
Unheated Mozambique Ruby 2.7mm/0.135ct Loose
Sale price¥19,800
Mexican Opal 9.6mm/1.803ct Loose (Contralus Opal)
Sale price¥49,800
Pink sapphire 0.202ct loose stone
Sale price¥8,800
Yellow sapphire 0.287ct loose stone
Sale price¥8,800
0.165ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥5,980
Colombian pyrite emerald 3.817ct loose stone
Sale price¥59,800
Sri Lankan Star Sapphire 7.111ct Loose
Sale price¥59,800
Sri Lankan Star Sapphire 6.477ct Loose
Sale price¥49,800
Greenland sapphire 0.592ct loose stone
Sale price¥18,800
[On sale June 2 at 10 PM] Loose Diamond 3.7mm/0.197ct (H, VS-1, Good)
Sale price¥29,800
Sri Lankan Blue Sapphire 0.519ct Loose
Sale price¥14,800
Madagascar pink sapphire 0.243ct loose stone
Sale price¥8,800
Madagascar pink sapphire 0.346ct loose stone
Sale price¥15,800
Madagascar Blue Sapphire 0.302ct Loose
Sale price¥15,800
Madagascar Yellow Sapphire 4.4mm/0.417ct Loose
Sale price¥14,800
Madagascar Green Sapphire 0.253ct Loose
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.