Myanmar Purple Spinel 0.872ct Loose Stone
Sale price¥8,800
YAG (yttrium aluminum garnet) 1.792ct loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 6.5mm/1.774ct loose stone
Sale price¥12,800
Brazilian Paraiba tourmaline 0.226ct loose (CuO:0.7%, MnO:2.5%)
Sale price¥39,800
Bicolor pink star sapphire from Mogok 0.360ct loose
Sale price¥24,800
Pt950 Benitoite 0.10ct Aquamarine Blue Diamond Ring
Sale price¥89,800
Bicolor pink euclase from Brazil 3.210ct loose Japanese-German edition
Sale price¥798,000
Bicolor tourmaline 0.591ct loose (rose cut)
Sale price¥8,980
Bicolor tourmaline 0.435ct loose (rose cut)
Sale price¥5,980
Pink tourmaline 0.482ct loose stone
Sale price¥5,980
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 1.490ct Loose (Faceted)
Sale price¥35,800
Brazilian bicolor tourmaline 0.258ct loose stone
Sale price¥8,800
[12549429] Blue sapphire 0.862ct loose stone
Sale price¥25,800
Colombian Trapiche Emerald 1.448ct Loose
Sale price¥69,800
[12554117] Brazilian Alexandrite 0.058ct loose stone
Sale price¥14,800
South African rough diamond (sawable) 0.105ct rough (with trigon)
Sale price¥39,800
Zimbabwean sphene 0.665ct loose stone
Sale price¥12,800
[E33 Shinjuku] Blue Sapphire 4.1mm/0.332ct Loose
Sale price¥25,800
[E33 Shinjuku] Blue sapphire 0.291ct loose stone
Sale price¥18,800
[E33 Shinjuku] Afghanistan Hackmanite 0.115ct Loose Stone
Sale price¥22,800
Afghanistan Hackmanite 0.091ct loose stone
Sale price¥18,800
[E33 Shinjuku] Russian Chrome Diopside 1.365ct Loose Stone
Sale price¥15,800
South African Sugilite 5.2mm/0.434ct Loose Stone (Rose Cut)
Sale price¥18,800
Tanzanian Bicolor Grossular Garnet 1.359ct Loose Stone
Sale price¥49,800
Zimbabwean sphene 1.057ct loose stone
Sale price¥22,800
Zimbabwean sphene 0.756ct loose stone
Sale price¥18,800
Zimbabwean sphene 0.850ct loose stone
Sale price¥19,800
Zimbabwean sphene 1.170ct loose stone
Sale price¥22,800
Zimbabwean sphene 0.751ct loose stone
Sale price¥16,800
Australian boulder opal 9.120ct loose
Sale price¥98,000
Mongolian Bicolor Andesine 0.944ct Loose Stone
Sale price¥15,800
Mozambique rubellite 1.406ct loose stone
Sale price¥69,800
Brazilian Swiss Blue Topaz 1.065ct Loose Stone
Sale price¥11,000
German Auchenite 0.090ct loose stone
Sale price¥39,800
German Apatite 0.097ct loose stone
Sale price¥39,800
Indian moonstone 2.415ct loose stone
Sale price¥15,800
Tibetan Andesine 0.967ct Loose Stone
Sale price¥15,800
[E33 Shinjuku] Synthetic Alexandrite 5.7mm/0.827ct Loose Stone
Sale price¥19,800
Brazilian Fluorite Quartz 3.962ct Loose Stone
Sale price¥24,800
Brazilian Bicolor Beryl 0.556ct Loose Stone
Sale price¥29,800
[E33 Shinjuku] Spanish Sphalerite 6.5mm/1.375ct Loose Stone
Sale price¥19,800
American Anthill Garnet 0.822ct Loose Stone
Sale price¥19,800
1.008ct Tanzanian orange zircon loose stone
Sale price¥9,800
UV opal from Hokkaido 12.259ct loose with patch
Sale price¥6,980
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.