Colombian emerald 0.091ct loose stone
Sale price¥15,800
Brazilian Blue Tourmaline 0.827ct Loose Stone
Sale price¥19,800
0.604ct rough diamond
Sale price¥12,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥18,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥29,800
Paraiba tourmaline from Brazil 0.243ct loose
Sale price¥14,800
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥12,800
American red beryl 0.141ct loose
Sale price¥14,800
American red beryl 0.208ct loose
Sale price¥22,800
Tanzanite from Tanzania 0.680ct loose stone
Sale price¥15,800
3.583ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥29,800
Australian black opal 0.758ct loose stone
Sale price¥18,800
American Peridot 0.770ct Loose Stone
Sale price¥12,800
Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone
Sale price¥15,800
Tanzanite from Tanzania 0.730ct loose stone
Sale price¥29,800
Sri Lankan Bicolor Sapphire 0.607ct Loose Stone
Sale price¥15,800
0.257ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥12,800
Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity
Sale price¥14,800
South African gray diamond (makeable) 0.169ct rough stone
Sale price¥14,800
South African yellow diamond (makeable) 0.202ct rough stone
Sale price¥15,800
American benitoite 0.069ct loose
Sale price¥19,800
Tibetan bicolor andesine 1.818ct loose
Sale price¥18,800
Pakistani oil-in quartz 0.535ct loose
Sale price¥14,800
American benitoite 0.074ct loose
Sale price¥18,800
American benitoite 0.076ct loose
Sale price¥19,800
Uncut Canadian diamond (sawable) 0.103ct
Sale price¥29,800
0.939 ct Loose Imperial Topaz from Brazil with Certificate
Sale price¥29,800
Mexican Fire Opal 0.191ct Loose (Faceted Cut)
Sale price¥12,800
Tanzanian Canary Yellow Chrysoberyl 0.139ct Loose Stone
Sale price¥16,800
Tanzanian Mandarin Garnet 0.352ct Loose Stone
Sale price¥18,800
American Peridot 0.969ct Loose Stone
Sale price¥25,800
USA origin Peridot, 0.496 ct, 2-stone matched pair, loose
Sale price¥12,800
Blue Sapphire 5.0mm/0.552ct Loose Stone
Sale price¥18,800
Unheated Vietnamese Silky Pink Sapphire 0.291ct Loose Stone
Sale price¥12,800
Madagascar Purple Sapphire 4.2mm/0.418ct Loose
Sale price¥19,800
Tanzanian Green Zoisite 0.354ct Loose Stone
Sale price¥12,800
Rhodochrosite 0.331ct loose from Detroit City
Sale price¥25,800
Benitoite 0.091ct loose (emerald cut)
Sale price¥25,800
Tibetan bicolor andesine 1.972ct loose
Sale price¥19,800
Tibetan bicolor andesine 1.856ct loose
Sale price¥16,800
Canadian rough diamond (sawable) 0.096ct rough with trigon
Sale price¥29,800
1.519ct loose Oregon sunstone from the United States
Sale price¥15,800
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.