Birthstone list
Paraiba tourmaline from Brazil 3.3mm/0.169ct loose
Sale price¥9,800
Aventurine aquamarine cat's eye 1.421ct loose
Sale price¥4,980
Aventurine Aquamarine Cat's Eye 1.210ct Loose
Sale price¥4,980
Aventurine aquamarine cat's eye 1.814ct loose
Sale price¥6,980
Paraiba tourmaline from Brazil 0.243ct loose
Sale price¥14,800
Paraiba tourmaline from Brazil 3.5mm/0.278ct loose
Sale price¥18,800
Mexican Topaz 1.470ct Loose Stone
Sale price¥7,980
Brazilian bicolor tourmaline 0.697ct loose stone
Sale price¥6,580
Diamond 0.126ct loose (F, VS2, octagonal cut)
Sale price¥25,800
Diamond 0.096ct loose (D, SI1, octagonal cut)
Sale price¥19,800
Diamond 0.120ct loose (G, VS2, Excellent H&C)
Sale price¥28,800
Chrome tourmaline from Tanzania 2.5mm/0.061ct loose
Sale price¥3,980
Chrome tourmaline from Tanzania 2.5mm/0.076ct loose
Sale price¥3,980
Colombian trapiche emerald (reverse trapiche) 0.082ct rough stone
Sale price¥9,800
Colombian trapiche emerald (reverse trapiche) 3.2mm/ 0.091ct rough stone
Sale price¥11,000
Colombian trapiche emerald (reverse trapiche) 0.098ct rough stone
Sale price¥9,800
Colombian trapiche emerald (reverse trapiche) 0.131ct rough stone
Sale price¥14,800
Colombian trapiche emerald (reverse trapiche) 3.4mm/0.132ct rough stone
Sale price¥14,800
Colombian trapiche emerald (reverse trapiche) 0.135ct rough stone
Sale price¥14,800
Colombian trapiche emerald (reverse trapiche) 3.6mm/0.168ct rough stone
Sale price¥19,800
Yellow diamond 0.245ct loose (FANCY INTENSE ORANGY YELLOW, SI1)
Sale price¥55,800
Yellow diamond 0.188ct loose (FANCY INTENSE YELLOW, VS1)
Sale price¥47,800
Yellow diamond 0.153ct loose (FANCY INTENSE YELLOW ORANGE, SI1)
Sale price¥38,800
Yellow diamond 0.291ct loose (FANCY INTENSE ORANGY YELLOW, SI2)
Sale price¥64,800
Yellow diamond 0.212ct loose (FANCY DEEP ORANGY YELLOW, VS1)
Sale price¥45,800
Russian demantoid garnet (horsetail recognized) 0.378ct loose
Sale price¥39,800
Demantoid garnet 38.035ct rough stone from Madagascar
Sale price¥12,800
Demantoid garnet 20.693ct rough stone from Madagascar
Sale price¥12,800
Demantoid garnet 15.468ct rough stone from Madagascar
Sale price¥12,800
Sri Lankan star sapphire (4 rows) 1.473ct loose
Sale price¥79,800
Opal 6mm/0.590ct loose (rose cut)
Sale price¥8,800
Bekily Blue Garnet from Madagascar (color change garnet) 0.297ct loose
Sale price¥19,800
Conch pearl (with flame pattern) 0.387ct loose
Sale price¥39,800
Conch pearl (with flame pattern) 0.439ct loose
Sale price¥39,800
Paraiba tourmaline from Brazil 0.036ct loose
Sale price¥25,800
Paraiba tourmaline from Brazil 0.039ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.050ct loose
Sale price¥39,800
Paraiba tourmaline from Brazil 0.037ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.039ct loose
Sale price¥39,800
Paraiba tourmaline from Brazil 0.043ct loose
Sale price¥39,800
Paraiba tourmaline from Brazil 0.038ct loose
Sale price¥29,800
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.