Birthstone list
1.689ct loose teal blue sapphire
Sale price¥98,000
Sri Lankan star sapphire 12.679ct loose
Sale price¥158,000
Brazilian green tourmaline 3.102ct loose stone
Sale price¥69,800
Sri Lankan star sapphire 5.066ct loose
Sale price¥69,800
Australian black opal 2.736ct loose
Sale price¥98,000
Sri Lankan star sapphire 3.821ct loose
Sale price¥79,800
Kenyan Tsavorite 0.806ct Loose Stone
Sale price¥39,800
Sri Lankan star sapphire 3.317ct loose
Sale price¥59,800
Sri Lankan star sapphire 11.342ct loose
Sale price¥69,800
Sri Lankan blue sapphire 1.008ct loose stone
Sale price¥69,800
Mexican Cantera Opal 8.432ct Loose
Sale price¥39,800
Mexican Cantera Opal 9.166ct Loose
Sale price¥69,800
Zambian bicolor tourmaline 4.019ct loose stone
Sale price¥98,000
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Labradorite Moonstone 1.598ct Loose Stone Japanese-German
Sale price¥8,800
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥39,800
Yellow opal 17.283ct loose
Sale price¥29,800
White topaz 16.06ct loose
Sale price¥25,800
Bicolor grossular garnet 0.782ct loose
Sale price¥12,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥79,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Loose Tourmaline from Brazil, 0.270 ct
Sale price¥5,980
2.275ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥59,800
Mexican Opal (Faceted) 0.261ct Loose (Contrarus Opal)
Sale price¥12,800
Mexican Fire Opal (Faceted) 0.401ct Loose (Contrarus Opal)
Sale price¥15,800
Brazilian Amethyst 0.256ct Loose Stone
Sale price¥8,800
Green sapphire 0.607ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.170ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.182ct Loose
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.297ct Loose
Sale price¥12,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)
Sale price¥14,800
Colombian emerald rough stone 7.924ct
Sale price¥9,800
0.542ct Loose Leuco Garnet from Myanmar, with certificate
Sale price¥39,800
![[On Sale at 10 PM on December 5th] YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct Loose Stone](http://store.karatz.jp/cdn/shop/files/yag-65mm1548ct-257679.jpg?v=1764892582&width=1200)
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥8,800
Pink sapphire 0.225ct loose
Sale price¥6,980
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥9,800
Brazil Indicolite Tourmaline 0.431ct Loose Gemstone with Certificate
Sale price¥29,800
Australian boulder opal 3.695ct loose
Sale price¥14,800
Australian boulder opal 2.470ct loose
Sale price¥7,980
Pink tourmaline 0.516ct loose
Sale price¥5,980
Sri Lankan star sapphire 1.487ct loose
Sale price¥8,800
Bicolor tanzanite 0.479ct loose
Sale price¥18,800
Colombian pyrite in emerald 4.592ct loose
Sale price¥110,000
Unheated silky pink sapphire from Vietnam 0.426ct loose
Sale price¥9,800
Montana Sapphire 3mm/0.155ct loose
Sale price¥18,800
Colombian trapiche emerald (reverse trapiche) 0.144ct loose
Sale price¥15,800
Paraiba tourmaline from Brazil 0.144ct loose (CuO:0.9%,MnO:2.8%)
Sale price¥55,800
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.