Sri Lankan Twin Star Sapphire 5.225ct Loose
Sale price¥98,000
Sri Lankan triple star sapphire 1.743ct loose stone
Sale price¥128,000
Cornell pin from Tanzania 0.523ct loose
Sale price¥7,980
Mexican Cantera Opal 8.432ct Loose
Sale price¥39,800
Sri Lankan Golden Sapphire 0.649ct Loose
Sale price¥29,800
Kenyan Tsavorite 0.806ct Loose Stone
Sale price¥39,800
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥498,000
Tanzanian Rhodolite Garnet 2.081ct Loose Stone, Japan-Germany Exchange
Sale price¥18,800
Mozambique Rhodolite Garnet 3.662ct Loose Stone
Sale price¥25,800
Sri Lankan star sapphire 3.317ct loose
Sale price¥59,800
Tanzanite from Tanzania 2.777ct loose stone
Sale price¥98,000
Brazilian green tourmaline 4.345ct loose stone
Sale price¥69,800
2.275ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥59,800
Brazilian Dumortierite in Quartz 0.382ct Loose Stone
Sale price¥9,800
Brazilian Blue Tourmaline 0.827ct Loose Stone
Sale price¥19,800
Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone
Sale price¥69,800
Myanmar color change zircon 0.697ct loose stone
Sale price¥39,800
0.604ct rough diamond
Sale price¥12,800
Diamond rough (makeable) 0.204ct rough
Sale price¥39,800
Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sale price¥98,000
Kunzite from Afghanistan 23.634ct loose stone
Sale price¥98,000
Tanzanian Rhodolite Garnet 5.1mm/0.656ct Loose Stone
Sale price¥8,800
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥18,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥29,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Sphene from Madagascar 0.498ct loose
Sale price¥6,980
American red beryl 0.208ct loose
Sale price¥22,800
American red beryl 0.141ct loose
Sale price¥14,800
3.583ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥29,800
Australian black opal 0.758ct loose stone
Sale price¥18,800
Sri Lankan bicolor sapphire 0.586ct loose stone
Sale price¥39,800
Tanzanite from Tanzania 0.680ct loose stone
Sale price¥15,800
Tanzanian Bicolor Grossular Garnet 2.997ct Loose Stone
Sale price¥69,800
Cambodian Blue Zircon 0.205ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.204ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.221ct Loose
Sale price¥3,980
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥12,800
Cambodian Blue Zircon 0.609ct Loose
Sale price¥5,980
Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity
Sale price¥14,800
Tanzanite from Tanzania 0.436ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.467ct loose stone
Sale price¥9,800
Tibetan bicolor andesine 1.818ct loose
Sale price¥18,800
Pakistani oil-in quartz 0.535ct loose
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
South African gray diamond (makeable) 0.169ct rough 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.