Birthstone list
Tanzanian Rhodolite Garnet 0.649ct Loose Stone
Sale price¥8,800
Emerald 0.354ct loose stone
Sale price¥8,800
Brazilian Sky Blue Topaz (untreated) 2.013ct loose stone
Sale price¥12,800
Brazilian Sky Blue Topaz (untreated) 3.085ct loose stone
Sale price¥19,800
Brazilian bicolor tourmaline 0.891ct loose stone (princess cut)
Sale price¥15,800
Brazilian copper rutilated quartz 1.374ct loose stone
Sale price¥6,980
Brazilian copper rutilated quartz 1.657ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 2.211ct loose stone
Sale price¥12,800
Brazilian copper rutilated quartz 1.376ct loose stone
Sale price¥9,800
Brazilian copper rutilated quartz 2.073ct loose stone
Sale price¥9,800
Brazilian copper rutilated quartz 1.643ct loose stone
Sale price¥12,800
Brazilian copper rutilated quartz 1.507ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.354ct loose stone
Sale price¥9,800
Pt900 Tanzanian Malaya Garnet 2.01ct Diamond Pendant (Necklace)
Sale price¥59,800
Pt900 Russian Demantoid Garnet (Horsetail) 0.30ct and Diamond 0.30ct Ring
Sale price¥128,000
Diamond (cabochon cut) 0.233ct loose
Sale price¥39,800
Mexican Hyalite Opal 6.1mm/0.810ct Loose
Sale price¥15,800
Mexican Hyalite Opal 6.0mm/0.676ct Loose Stone
Sale price¥15,800
Mexican Hyalite Opal 5.0mm/0.449ct Loose Stone
Sale price¥9,800
Tanzanian Almandine Garnet 34.581ct Loose Stone
Sale price¥158,000
Brazilian bicolor topaz (untreated) 2.278ct loose stone
Sale price¥24,800
Brazilian bicolor topaz (untreated) 1.452ct loose stone
Sale price¥18,800
Brazilian parti-color tourmaline 1.412ct loose stone
Sale price¥39,800
Australian black opal 4.528ct loose
Sale price¥39,800
Australian black opal 2.591ct loose stone
Sale price¥39,800
Australian black opal 1.399ct loose
Sale price¥22,800
Australian black opal 0.599ct loose stone
Sale price¥18,800
Australian black opal 0.693ct loose stone
Sale price¥8,800
Australian black opal 0.327ct loose stone
Sale price¥7,980
Indian Moonstone 0.881ct Loose
Sale price¥8,800
Indian Moonstone 2.009ct Loose
Sale price¥15,800
Bicolor sapphire 0.143ct loose
Sale price¥8,800
Bicolor sapphire 0.481ct loose
Sale price¥25,800
Mexican Fire Opal 1.135ct Loose
Sale price¥9,800
Brazilian Sky Blue Topaz (untreated) 0.968ct loose stone
Sale price¥12,800
Mozambique Almandine Garnet 1.071ct Loose Stone
Sale price¥9,800
Mozambique Almandine Garnet 2.185ct Loose Stone
Sale price¥15,800
Brazilian Sky Blue Topaz (untreated) 1.470ct loose stone
Sale price¥12,800
Brazilian Santa Maria Aquamarine 0.206ct loose stone
Sale price¥12,800
Brazilian Blue Topaz 2.912ct Loose
Sale price¥12,800
Bicolor tourmaline 1.833ct loose
Sale price¥18,800
Brazilian Rubellite 0.897ct loose stone
Sale price¥29,800
Brazilian Rubellite Cat's Eye 1.484ct Loose Stone
Sale price¥39,800
Purple sapphire 0.419ct loose stone
Sale price¥15,800
Pt900 Kashmir unheated sapphire 1.14ct / diamond 0.70ct ring GIA
Sale price¥1,580,000
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.