Sri Lankan Goethite Topaz 4.992ct Loose Stone
Sale price¥14,800
Tanzanite 0.482ct loose stone (princess cut) from Tanzania
Sale price¥18,800
[Koshu Precious Stones plusthree] Amethyst 4.306ct Loose Stone Patch
Sale price¥25,800
[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose
Sale price¥29,800
Chameleon Diamond 0.057ct Loose (FANCY LIGHT GRAY GREEN, SI2)
Sale price¥29,800
Oregon Sunstone from the United States 6.0mm/0.844ct loose stone
Sale price¥25,800
Oregon Sunstone from the United States 6mm/0.849ct loose stone
Sale price¥22,800
Tanzanite from Tanzania 6.5mm/0.945ct loose stone
Sale price¥28,800
Tanzanite from Tanzania 0.767ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 0.567ct loose stone
Sale price¥14,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.365ct Loose Stone
Sale price¥18,800
Oregon Sunstone from the United States 0.941ct loose stone
Sale price¥29,800
Spanish Andalusite 0.776ct loose stone
Sale price¥11,800
Colombian pyrite-mica emerald 0.649ct loose stone
Sale price¥29,800
Colombian emerald rough stone 1.707ct
Sale price¥18,800
Paraiba tourmaline from Brazil 0.047ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.052ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.051ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.048ct loose
Sale price¥29,800
Tanzanian Kornerupine 0.202ct loose stone
Sale price¥18,800
Tanzanian Kornerupine 0.233ct loose stone
Sale price¥14,800
Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog
Sale price¥29,800
Colombian emerald 0.191ct loose
Sale price¥22,800
Colombian emerald 0.258ct loose stone
Sale price¥29,800
Colombian emerald 0.231ct loose stone
Sale price¥28,800
Colombian emerald 0.215ct loose stone
Sale price¥25,800
Mexican Fire Opal 1.222ct Loose (Faceted Cut)
Sale price¥12,800
Japanese style twin crystal 5.771ct raw stone
Sale price¥19,800
Japanese style twin crystal 4.727ct raw stone
Sale price¥15,800
Japanese style twin crystal 4.715ct raw stone
Sale price¥15,800
Madagascar sphene 0.665ct loose stone
Sale price¥12,800
Pakistani Veirinite 0.072ct loose stone
Sale price¥19,800
Pakistani Veirinite 0.107ct loose stone
Sale price¥29,800
1.953ct Bicolor Sphalerite from Spain
Sale price¥25,800
Zimbabwean Apatite (UV type) 0.585ct loose stone
Sale price¥12,800
Zimbabwean Apatite (UV type) 1.393ct loose stone
Sale price¥29,800
Brazilian Rubellite Cat's Eye 1.180ct Loose Stone
Sale price¥29,800
Additional charge: K18PG (base metal) + 10,000 yen
Sale price¥25,000
Pakistani Aragonite 4.782ct loose stone
Sale price¥14,800
Brazilian bicolor tourmaline 1.248ct loose stone
Sale price¥18,800
Brazilian Dumortierite in Quartz 2.714ct loose stone
Sale price¥24,800
Tanzania Bicolor Zoisite 1.509ct Loose Stone
Sale price¥22,800
Tanzanite from Tanzania 0.492ct loose stone
Sale price¥14,800
Myanmar pink spinel 0.520ct loose stone
Sale price¥12,800
Brazilian Moss Agate 1.065ct Loose Stone
Sale price¥12,800
Nigerian Aventurine Aquamarine 1.164ct Loose Stone
Sale price¥12,800
Sri Lankan Silky Sapphire 6.4mm/1.036ct Loose Stone
Sale price¥12,800
Silky Sapphire from Sri Lanka 1.716ct loose stone
Sale price¥14,800
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.