Birthstone list
Citrine 0.833ct loose stone
Sale price¥3,980
Opal 6mm/0.595ct loose (rose cut)
Sale price¥9,800
Tourmaline cat's eye 0.910ct loose
Sale price¥6,980
Brazilian Trapichea Amethyst 24.772ct loose with patch
Sale price¥8,800
[Koshu precious stone Kiriko plusthree] Green tourmaline 1.880ct loose
Sale price¥35,800
[Koshu precious stone Kiriko plusthree] Rubellite 1.809ct loose
Sale price¥39,800
Yellow sapphire from Sri Lanka 0.222ct loose
Sale price¥12,800
Mexican water opal 0.212ct loose (contrarus opal)
Sale price¥39,800
Bicolor sapphire from Madagascar 0.212ct loose
Sale price¥9,800
Bicolor sapphire from Madagascar 0.198ct loose
Sale price¥9,800
Bicolor sapphire from Madagascar 0.293ct loose
Sale price¥18,800
Bicolor sapphire from Madagascar 0.259ct loose
Sale price¥9,800
Bicolor sapphire from Madagascar 0.265ct loose
Sale price¥16,800
Bicolor sapphire from Madagascar 0.252ct loose
Sale price¥14,800
Pink tourmaline 0.205ct loose
Sale price¥5,980
Mint color tourmaline 0.229ct loose
Sale price¥5,980
Mint color tourmaline 0.198ct loose
Sale price¥5,980
Mint color tourmaline 0.115ct loose
Sale price¥5,980
Mint green sapphire 0.348ct loose
Sale price¥12,800
Pink diamond 0.067ct loose (FANCY INTENSE PURPLE PINK, I-1)
Sale price¥148,000
Pink diamond 0.063ct loose (FANCY INTENSE PURPLE PINK, I-1)
Sale price¥138,000
Russian demantoid garnet cat's eye (horsetail recognized) 0.222ct loose
Sale price¥29,800
Russian demantoid garnet cat's eye (horsetail recognized) 0.171ct loose
Sale price¥22,800
Pink sapphire 0.881ct loose
Sale price¥18,800
Bicolor star sapphire from Myanmar 1.340ct loose
Sale price¥35,800
Paraiba tourmaline from Brazil 0.079ct loose
Sale price¥23,800
Paraiba tourmaline from Brazil 0.066ct loose
Sale price¥19,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥45,800
Mexican Water Opal 2.623ct Loose (Contralus Opal)
Sale price¥55,800
Mexican Opal 0.796ct Loose (Contralus Opal)
Sale price¥24,800
Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)
Sale price¥59,800
Pink diamond 2.3mm/0.055ct loose (FANCY LIGHT PURPLE PINK, SI2)
Sale price¥79,800
Pink diamond 2.2mm/0.041ct loose (FANCY LIGHT PURPLE PINK, SI2)
Sale price¥57,800
Pink diamond 2.4mm/0.071ct loose (FANCY LIGHT PURPLE PINK, SI2)
Sale price¥98,000
Pink diamond 2.4mm/0.055ct loose (FANCY LIGHT PURPLE PINK, SI2)
Sale price¥69,800
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥21,800
Paraiba tourmaline from Mozambique 0.516ct loose
Sale price¥41,800
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
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.