Birthstone list
Russian Demantoid Garnet (Horsetail) 2.9mm/0.194ct Loose Stone
Sale price¥29,800
Kenyan Tsavorite 0.379ct loose stone
Sale price¥35,800
Tanzanite 1.004ct loose stone
Sale price¥22,800
Tanzanite 4.8mm/0.494ct loose stone
Sale price¥15,800
Bicolor Zoisite 1.100ct Loose Stone (Bicolor Tanzanite)
Sale price¥19,800
Bicolor Zoisite 0.450ct Loose Stone (Bicolor Tanzanite)
Sale price¥18,800
Lavender Tanzanite 0.784ct loose stone
Sale price¥14,800
Topaz 0.950ct loose stone
Sale price¥8,800
Mexican Fire Opal 1.833ct Loose
Sale price¥49,800
Mexican Fire Opal 1.424ct Loose
Sale price¥49,800
White Topaz 6.495ct Loose (Vortex Cut)
Sale price¥29,800
Myanmar Trapiche Ruby 0.250ct Loose
Sale price¥15,800
Myanmar Trapiche Ruby 0.342ct Loose
Sale price¥15,800
Myanmar trapichel ruby 0.216ct loose
Sale price¥15,800
Mexican Fire Opal 1.877ct Loose
Sale price¥14,800
Nepalese bicolor kyanite 0.987ct loose stone
Sale price¥9,800
Nepalese Bicolor Kyanite 6.3mm/0.903ct Loose Stone
Sale price¥9,800
Ethiopian Opal 2.131ct Loose
Sale price¥12,800
Ethiopian Opal 1.694ct Loose
Sale price¥8,800
Mexican Opal 0.677ct Loose
Sale price¥6,980
Mexican Opal 0.681ct Loose
Sale price¥6,980
Mexican Opal 0.648ct Loose
Sale price¥14,800
Mexican Opal 0.499ct Loose
Sale price¥5,980
Mexican Opal 0.854ct Loose
Sale price¥6,980
Green tourmaline 0.621ct loose stone
Sale price¥9,800
Green tourmaline 0.457ct loose stone
Sale price¥9,800
Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2)
Sale price¥69,800
Diamond 0.320ct loose (D, VS2)
Sale price¥79,800
Australian black opal 2.407ct loose
Sale price¥59,800
Salt and pepper diamond 0.446ct loose
Sale price¥39,800
Mexican Fire Opal 0.599ct Loose
Sale price¥5,980
Mexican Fire Opal 2.235ct Loose
Sale price¥26,800
Mexican Fire Opal 1.743ct Loose
Sale price¥24,800
Mexican Fire Opal 3.425ct Loose
Sale price¥29,800
Australian Opal 0.760ct Loose
Sale price¥12,800
Australian Opal 0.315ct Loose
Sale price¥5,980
Australian Opal 0.440ct Loose
Sale price¥8,800
Australian Opal 1.047ct Loose
Sale price¥14,800
Australian Opal 1.203ct Loose
Sale price¥12,800
Myanmar Leuco Garnet 0.324ct loose stone
Sale price¥39,800
[Rouge cut] Rhodolite garnet 0.410ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 1.357ct loose stone
Sale price¥16,800
YAG (Yttrium Aluminum Garnet) 1.171ct loose stone
Sale price¥14,800
Royal Blue Sapphire 0.730ct Loose AIGS
Sale price¥158,000
Australian black opal 1.744ct loose
Sale price¥39,800
Australian black opal 0.959ct loose stone
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.