Myanmar Ubaite Tourmaline 4.0mm/0.251ct Loose Stone
Sale price¥22,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition
Sale price¥98,000
Namibian Dioptase 0.134ct Loose Stone, Japan-Germany Mirror
Sale price¥59,800
YAG (Yttrium Aluminum Garnet) 7mm/1.686ct Loose Stone
Sale price¥12,800
Mozambique Aquamarine 4.9mm/0.463ct Loose Stone
Sale price¥9,800
Russian rough diamond (sawable) 0.125ct loose
Sale price¥29,800
Pt950 South Sea pearl 9.586ct, alexandrite, kornerupine, diamond ring
Sale price¥198,000
K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA
Sale price¥198,000
Brazilian Morganite 4.720ct loose stone
Sale price¥98,000
Nigerian Aventurine Aquamarine 0.471ct Loose Stone
Sale price¥8,800
Tanzanian Zoisite 1.000ct Loose Stone
Sale price¥19,800
Afghan Kunzite 0.799ct Loose Gemstone
Sale price¥6,980
Zimbabwe Apatite (UV Type) 1.393ct Loose Stone
Sale price¥29,800
Zimbabwean Apatite (UV Type) 0.585ct Loose
Sale price¥12,800
Grandidierite from Madagascar 0.264ct loose stone
Sale price¥88,800
Madagascar sphene 0.665ct loose stone
Sale price¥12,800
Mexican Fire Opal 0.212ct Loose (Faceted Cut)
Sale price¥8,800
Namibian Jeremejevite 0.405ct loose stone
Sale price¥128,000
Namibian Jeremejevite 0.158ct loose stone
Sale price¥45,800
Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog
Sale price¥29,800
K18/Pt950 Cambodian Blue Zircon 0.48ct Paraiba Tourmaline Ring
Sale price¥89,800
K18 Indian Iolite Sunstone 0.73ct Tanzanite Ring
Sale price¥188,000
Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%)
Sale price¥158,000
Rainbow Quartz (Iridescence Quartz) from India 0.940 ct Loose Gemstone
Sale price¥158,000
Madagascar Grandidierite 0.521ct loose stone
Sale price¥128,000
K18PG Madagascar pink sapphire 0.24ct 0.25ct earrings (Asscher cut)
Sale price¥59,800
K18YG American Turquoise 1.04ct Ring (Cat Cut)
Sale price¥79,800
K18YG rose cut diamond 0.171ct ring
Sale price¥89,800
Green tourmaline 1.190ct loose stone
Sale price¥98,000
Brazilian bicolor euclase 0.168ct loose stone
Sale price¥25,800
Brazilian Indicolite Tourmaline 1.616ct Loose Gemstone (JTL Certified)
Sale price¥69,800
Brazilian alexandrite 0.081ct loose
Sale price¥16,800
Mozambican Rubellite 1.141ct Loose Gemstone
Sale price¥29,800
Mexican Fire Opal 4.9mm/0.333ct Loose
Sale price¥8,800
Diamond 0.171ct loose stone (E, VS2, radiant cut)
Sale price¥35,800
Russian Yellow Diamond Rough (Sawable) 0.306ct Rough (Trigon)
Sale price¥98,000
Non-Oil Emerald 1.030ct Loose Gübelin Gübelin Certificate
Sale price¥698,000
Myanmar Podretteite 0.834ct loose stone
Sale price¥298,000
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.