Blue sapphire 0.291ct loose stone
Sale price¥18,800
Blue sapphire 4.1mm/0.332ct loose stone
Sale price¥25,800
Zimbabwean sphene 0.665ct loose stone
Sale price¥12,800
South African rough diamond (sawable) 0.105ct rough (with trigon)
Sale price¥39,800
[12554117] Brazilian Alexandrite 0.058ct loose stone
Sale price¥14,800
Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO: 2.0%, MnO: 2.3%)
Sale price¥45,800
Brazilian bicolor tourmaline 0.258ct loose stone
Sale price¥8,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 1.490ct Loose (Faceted)
Sale price¥35,800
Bicolor tourmaline 0.435ct loose (rose cut)
Sale price¥5,980
Bicolor tourmaline 0.591ct loose (rose cut)
Sale price¥8,980
Bicolor pink star sapphire from Mogok 0.360ct loose
Sale price¥24,800
YAG (Yttrium Aluminum Garnet) 6.5mm/1.774ct loose stone
Sale price¥12,800
YAG (yttrium aluminum garnet) 1.792ct loose
Sale price¥12,800
Unheated Brazilian Color Change Paraiba Tourmaline 0.30ct Loose GIA
Sale price¥1,280,000
[Camellia cut] Mexican fire opal 1.270ct loose with patch
Sale price¥98,000
Myanmar pink spinel 0.291ct loose stone
Sale price¥6,980
Prehnite 3.874ct loose
Sale price¥3,980
Playnight 3.085ct loose
Sale price¥3,980
Prehnite 3.870ct loose
Sale price¥3,980
Brazilian alexandrite 0.060ct loose
Sale price¥14,800
Benitoite 2.7mm/0.114ct loose
Sale price¥25,800
Russian demantoid garnet (horsetail recognized) 0.291ct loose
Sale price¥49,800
[Posted 32501454] Pink Diamond 0.051ct Loose (FANCY LIGHT PINK, SI-2)
Sale price¥39,800
Red spinel 0.195ct loose
Sale price¥5,980
Colombian emerald cat's eye 0.190ct loose
Sale price¥15,800
Myanmar Pink Spinel 0.650ct Loose
Sale price¥16,800
Brazilian Paraiba tourmaline 0.275ct loose (CuO:1.5%.MnO:2.3%)
Sale price¥398,000
Blue zircon 3.283ct loose
Sale price¥75,800
Sphene from Madagascar 0.765ct loose
Sale price¥15,800
Benitoite 0.095ct loose
Sale price¥18,800
Italian leucite 0.359ct loose
Sale price¥12,800
Italian leucite 0.130ct loose
Sale price¥8,800
Australian boulder opal 28.880ct loose
Sale price¥59,800
Australian boulder opal 1.675ct loose
Sale price¥14,800
Australian boulder opal 1.868ct loose
Sale price¥18,800
Malawi Bicolor Zircon 1.661ct Loose Stone
Sale price¥59,800
Set of 2 rutile stones, 6.213ct (rough stone + loose stone)
Sale price¥59,800
American Benitoite 2.2mm/0.270ct Loose Stone (Gradation Set)
Sale price¥69,800
Zimbabwean Bicolor Euclase 0.146ct Loose Stone
Sale price¥35,800
Vietnamese aquamarine 1.728ct loose stone
Sale price¥18,800
[Rouge Cut] Brazilian Dumortierite in Quartz 1.493ct Loose Stone
Sale price¥9,800
[Rouge Cut] Brazilian Dumortierite in Quartz 1.184ct 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.