Tanzanian Color Change Garnet 0.607ct Loose Stone
Sale price¥11,000
Tanzanian Yellow Zircon 0.835ct Loose
Sale price¥9,800
Mexican Fire Opal (Faceted) 0.501ct Loose Stone
Sale price¥12,800
Australian Prehnite 0.908ct Loose
Sale price¥7,980
YAG (Yttrium Aluminum Garnet) 0.598ct loose stone
Sale price¥9,800
Australian black opal 0.805ct loose stone
Sale price¥39,800
Tanzanite 0.753ct loose stone from Tanzania
Sale price¥25,800
Tanzanian Rhodolite Garnet 0.733ct Loose Stone
Sale price¥9,800
0.796ct Loose Bicolor Grossular Garnet from Tanzania
Sale price¥39,800
Tanzanian Zoisite 0.956ct Loose Stone
Sale price¥19,800
Myanmar Jade (Jadeite) 0.525ct Loose Stone
Sale price¥8,800
Colombian mint-color emerald, 5.1mm/0.517ct loose stone
Sale price¥12,800
Zimbabwean Apatite (UV Type) 0.703ct Loose Stone
Sale price¥7,980
Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon)
Sale price¥198,000
Madagascar Pezzottaite 0.670ct Loose Stone, Japan-Germany Scale
Sale price¥298,000
Colombian oil-free emerald 0.510ct loose GIA
Sale price¥598,000
Tourmaline 0.731ct loose
Sale price¥5,980
Pakistani Oil in Quartz 0.651ct Loose Stone
Sale price¥7,980
Oregon Sunstone 0.846ct loose
Sale price¥7,980
Oregon Sunstone 0.852ct loose
Sale price¥7,980
Rubellite 0.549ct loose
Sale price¥19,800
Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS
Sale price¥128,000
Kenyan Idocrase 0.650ct Loose
Sale price¥12,800
Mongolian Color Change Andesine 0.882ct Loose Stone
Sale price¥19,800
0.933 ct loose Mozambican rubellite
Sale price¥25,800
Tanzanite from Tanzania 0.889ct loose stone
Sale price¥18,800
Tanzanite 0.579ct loose stone from Tanzania
Sale price¥5,980
Tanzanian Zoisite 5.5mm/0.689ct Loose
Sale price¥18,800
Brazilian Sunstone 5.1mm/0.532ct Loose Stone (Rose Quartz)
Sale price¥5,980
Brazilian Sunstone 6.2mm/0.896ct Loose (Rose Quartz)
Sale price¥5,980
Alexandrite cat's eye from Sri Lanka 0.947ct loose
Sale price¥18,800
Opal 6mm/0.590ct loose (rose cut)
Sale price¥5,980
Brazilian unheated particolor Paraiba tourmaline 0.84ct loose GIA
Sale price¥2,580,000
Brazilian indicolite tourmaline 0.691ct loose stone
Sale price¥19,800
Brazilian indicolite tourmaline 0.750ct loose stone
Sale price¥15,800
American Peridot 0.969ct Loose Stone
Sale price¥25,800
Brazilian dumortierite in quartz 0.993ct loose (faceted cut)
Sale price¥7,980
Pakistani oil-in quartz 0.535ct loose
Sale price¥14,800
Sri Lankan Bicolor Sapphire 0.607ct Loose Stone
Sale price¥15,800
Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone
Sale price¥15,800
Australian black opal 0.758ct loose stone
Sale price¥18,800
Tanzanite from Tanzania 0.680ct loose stone
Sale price¥15,800
Sri Lankan bicolor sapphire 0.586ct loose stone
Sale price¥39,800
Paraiba tourmaline from Mozambique 0.516ct loose
Sale price¥39,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
0.604ct rough diamond
Sale price¥12,800
Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity
Sale price¥39,800
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.