American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Ceylon ice blue sapphire, 1.134 ct, loose, with gemological report
Sale price¥45,800
Unheated Ruby, 0.207 ct, Loose Stone, Hōki Kyō
Sale price¥69,800
Mexican Fire Opal 0.718ct Loose
Sale price¥9,800
Mexican Fire Opal 0.593ct Loose (Faceted Cut)
Sale price¥9,800
Tanzanian green sapphire 0.303ct loose stone
Sale price¥8,800
Colombian mint color emerald 0.297ct loose stone
Sale price¥8,800
Madagascar sapphire 0.448ct loose stone
Sale price¥15,800
[Calafuri] K18 Blue Sapphire and Diamond Ring Appraisal Report
Sale price¥128,000
Sri Lankan Silky Sapphire 5.1mm/0.488ct Rose Cut Loose Gemstone
Sale price¥7,980
Rough diamond from Sierra Leone (sawable) 0.089ct rough (trigon)
Sale price¥27,800
Rough diamond (sawable) from Russia, 0.148ct rough diamond (trigon)
Sale price¥49,800
Diamond (cabochon cut) 0.206ct loose
Sale price¥45,800
Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2)
Sale price¥69,800
Royal Blue Sapphire 0.730ct Loose AIGS
Sale price¥158,000
Zimbabwean rough green diamond (sawable) 0.228ct rough (trigon)
Sale price¥79,800
0.183ct Trapiche Emerald Loose Stone from Colombia
Sale price¥39,800
Rough diamond from Botswana (sawable) 0.118ct rough (trigon)
Sale price¥29,800
Botswana rough diamond (sawable) 0.090ct rough (trigon)
Sale price¥22,800
Rough diamond from Botswana (sawable) 0.087ct (trigon)
Sale price¥21,800
Mexican fire opal loose stone, 1.857 ct
Sale price¥25,800
Mexican Fire Opal 2.279ct Loose Stone
Sale price¥15,800
Mexican Fire Opal 0.729 ct Loose Stone
Sale price¥8,800
0.210 ct Colombian Trapiche Emerald Loose Stone
Sale price¥39,800
Madagascar bicolor sapphire 3.7mm/0.271ct loose
Sale price¥6,980
Blue Sapphire 0.369ct Loose Gemstone with Japan-Germany Appraisal
Sale price¥22,800
Australian Black Opal 1.080ct Loose
Sale price¥39,800
0.755 ct Loose Australian Black Opal
Sale price¥12,800
0.520ct Loose Australian Black Opal
Sale price¥13,800
【Carafuru】K18WG Diamond 1.03ct Pendant Top
Sale price¥128,000
[12551148] Australian black opal 3.890ct loose stone
Sale price¥69,800
South African diamond rough (sawable) 0.110ct rough
Sale price¥22,800
South African diamond rough (sawable) 0.085ct rough
Sale price¥15,800
Sri Lankan Star Sapphire 2.093ct Loose
Sale price¥8,800
Sri Lankan Star Sapphire 1.339ct Loose
Sale price¥12,800
Sri Lankan Star Sapphire 1.682ct Loose
Sale price¥12,800
Sri Lankan Star Sapphire 1.225ct Loose
Sale price¥12,800
Mexican Opal 0.499ct Loose
Sale price¥3,980
Mexican Opal 0.854ct Loose
Sale price¥5,980
[Colorfri] K18 Akoya Pearl and 0.08ct Diamond Ring with Certificate
Sale price¥49,800
【COLORFLE】Pt900/K18 Diamond 0.22ct Ring with Certificate
Sale price¥98,000
Madagascar Padparadscha Sapphire 3.9mm/0.336ct Loose DGL Certified
Sale price¥45,800
0.210ct Colombian Non-Oil Emerald Loose Stone GIA
Sale price¥228,000
Colombian Trapiche Emerald, 1.874ct Loose Stone with Certification
Sale price¥69,800
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.