Birthstone list
![[On sale June 8th, 10 PM JST] 《Limited to 4 stones》Needle-in-Blue Topaz Gacha💎Average 45ct《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/39.png?v=1780478004&width=2268)
![[On Sale June 13, 10 PM] [Limited to 2 Stones] Brown Diamond (4mm/0.3ct, with certificate) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_ab98be24-a2fb-436e-abe4-9e7713aae512.png?v=1781241148&width=3000)
Yellow diamond 0.190ct loose (FANCY DEEP ORANGY YELLOW, SI2)
Sale price¥39,800
Cantera opal 17.221ct loose
Sale price¥25,800
Diamond 0.348ct loose (I, SI1)
Sale price¥59,800
Tanzanite 1.360ct loose stone
Sale price¥49,800
[Camellia cut] Opal 14mm/5.283ct loose with patch
Sale price¥98,000
Pink tourmaline 1.690ct loose
Sale price¥39,800
Brazilian bicolor tourmaline 7.489ct loose
Sale price¥49,800
Mint color tourmaline 0.115ct loose
Sale price¥5,980
[Mr. Sanjay] Mexican water opal 3.161ct loose (Contrarus opal)
Sale price¥69,800
Bicolor tourmaline 0.467ct loose
Sale price¥6,980
White topaz 1.140ct loose
Sale price¥5,980
Pink tourmaline 6mm/0.990ct loose stone
Sale price¥12,800
Green Tourmaline 6mm/0.991ct Loose
Sale price¥15,800
Silky sapphire from Sri Lanka 1.319ct loose
Sale price¥15,800
Silky sapphire from Sri Lanka 0.627ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 0.868ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.981ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 1.036ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.920ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 0.928ct loose
Sale price¥9,800
Silky sapphire from Sri Lanka 0.632ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 1.086ct loose
Sale price¥15,800
Bicolor tourmaline 0.675ct loose
Sale price¥6,980
Diamond 0.534ct rough stone
Sale price¥9,800
Australian black opal 0.310ct loose
Sale price¥8,800
Amethyst 3.090ct loose
Sale price¥6,980
Twin star sapphire from Sri Lanka 2.523ct loose
Sale price¥98,000
Twin star sapphire from Sri Lanka 3.858ct loose (black star sapphire)
Sale price¥59,800
Twin star sapphire from Sri Lanka 3.003ct loose (Violet star sapphire)
Sale price¥59,800
American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose
Sale price¥8,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose
Sale price¥8,800
Montana Sapphire 0.254ct loose
Sale price¥9,800
Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut)
Sale price¥6,980
Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut)
Sale price¥3,980
Mexican egg-in-opal 0.627ct loose stone
Sale price¥8,800
Mexican egg-in-opal 1.243ct loose stone
Sale price¥14,800
Mozambique colorless tourmaline (acroite) 3.542ct loose stone
Sale price¥69,800
Brazilian Paraiba tourmaline in quartz 0.871ct loose
Sale price¥18,800
Russian rough diamond (sawable) 0.101ct loose
Sale price¥25,800
Brazilian copper rutilated quartz 1.610ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.991ct loose stone
Sale price¥6,980
Brazilian copper rutilated quartz 1.262ct loose stone
Sale price¥8,800
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.