Birthstone list
Rhodolite Garnet 5.3mm/0.703ct Loose Stone
Sale price¥12,800
Brazilian bicolor tourmaline 1.056ct loose
Sale price¥12,800
Rough diamond (makeable) 0.185ct loose (VS-SI)
Sale price¥19,800
Rough diamond (makeable) 0.345ct loose (VS-SI equivalent)
Sale price¥29,800
Bicolor tourmaline 5.825ct loose
Sale price¥128,000
Brazilian emerald 3.3mm/0.119ct loose
Sale price¥22,800
Parasite Peridot (Paracytic Peridot) 0.541ct Loose Japanese-German Edition
Sale price¥256,000
Blue tourmaline from Afghanistan 0.209ct loose
Sale price¥2,980
Blue tourmaline from Afghanistan 3.5mm/0.178ct loose
Sale price¥3,980
Yellow tourmaline 0.431ct loose stone
Sale price¥3,980
Brazilian bicolor tourmaline 3.291ct loose
Sale price¥35,800
Brazilian bicolor tourmaline 3.569ct loose
Sale price¥35,800
Colombian pyrite in emerald 7.836ct loose
Sale price¥398,000
18KPG pink sapphire 0.32ct brown diamond ring
Sale price¥69,800
Mexican Opal (Faceted) 0.242ct Loose
Sale price¥8,800
Brazilian bicolor tourmaline 1.965ct loose stone
Sale price¥18,800
Russian Demantoid Garnet (Horsetail) 3.8mm/0.255ct Loose Stone
Sale price¥39,800
Brazilian Color-Shifting Amethyst 0.849ct Loose Stone
Sale price¥8,800
Brazilian blue topaz 5.5mm/0.754ct loose stone
Sale price¥5,980
Mozambique Rhodolite Garnet 1.052ct Loose Stone
Sale price¥8,800
Brazilian Alexandrite 0.097ct Loose Stone (Emerald Cut)
Sale price¥38,800
Australian Crystal & White Opal 13-Stone Half Eternity Ring Set (2.0mm)
Sale price¥98,000
Sri Lankan star sapphire 1.093ct loose
Sale price¥8,800
Greenland Sapphire 4.0mm/0.328ct Loose Stone with Certificate
Sale price¥39,800
![[12559773] Ruby 0.122ct loose stone](http://store.karatz.jp/cdn/shop/files/PA171226_c028b763-7907-435d-9290-5e6712686ee0.jpg?v=1767532283&width=2078)
[12559773] Ruby 0.122ct loose stone
Sale price¥14,800
Australian White Opal, 6.0mm/0.697ct loose stone (rose cut)
Sale price¥8,800
Australian boulder opal 1.457ct loose stone
Sale price¥9,800
Brazilian London Blue Topaz 0.415ct Loose Stone
Sale price¥6,980
Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS
Sale price¥59,800
Russian Demantoid Garnet (Horsetail) 0.487ct Loose Stone
Sale price¥110,000
Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate
Sale price¥45,800
[12552640] Unheated Brazilian Paraiba Tourmaline 0.073ct loose stone
Sale price¥49,800
[12552618] Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone
Sale price¥49,800
[Posted 12549094] Sri Lankan sapphire cat's eye 3.739ct loose
Sale price¥59,800
[Posted in 12548907] Yellow tourmaline 0.469ct loose
Sale price¥8,800
[12548587 published] Star sapphire from Sri Lanka 1.325ct loose
Sale price¥5,980
[Posted in 12547848] Green tourmaline 0.869ct loose
Sale price¥15,800
Brazilian Aquamarine 8.858ct Loose Stone
Sale price¥198,000
Aquamarine 1.574ct loose stone
Sale price¥9,800
Pink zoisite from Tanzania 6.7mm/1.393ct loose (peach tanzanite)
Sale price¥128,000
Mali Garnet (Grossular/Andradite Garnet) 4.5mm/0.497ct Loose
Sale price¥8,800
Bicolor tanzanite 1.165ct rough stone from Tanzania
Sale price¥7,980
Bicolor tanzanite 1.121ct rough stone from Tanzania
Sale price¥6,980
Bicolor tanzanite 0.492ct raw stone from Tanzania
Sale price¥6,980
Australian boulder opal 0.874ct loose
Sale price¥3,980
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.