Birthstone list
[8/11 22:00 Sale] Tanzanian Rhodolite Garnet 0.734ct Loose Stone
Sale price¥6,980
[8/13 22:00 Sale] Brazilian Aquamarine 0.255ct Loose Stone
Sale price¥6,980
[On Sale at 10 PM on August 2nd] Madagascar Sapphire 0.516ct Loose
Sale price¥12,800
[On Sale at 10 PM on August 2nd] Madagascar Sapphire 0.344ct Loose
Sale price¥12,800
[On Sale at 10 PM on August 9th] Madagascar Sapphire 0.503ct Loose
Sale price¥15,800
[On sale at 10pm on August 14th] Madagascar sapphire 0.569ct loose
Sale price¥18,800
[On Sale at 10 PM on August 13th] Madagascar Sapphire 0.298ct Loose
Sale price¥12,800
[On Sale at 10 PM on August 9th] Madagascar Pink Sapphire 0.324ct Loose
Sale price¥12,800
[Dandelion cut] YAG (yttrium aluminum garnet) 8mm/2.752ct loose
Sale price¥45,800
Opal 426.985ct rough stone
Sale price¥29,800
Mexican Cantera Opal 4.456ct Loose
Sale price¥39,800
Mexican Hyalite Opal 1.587ct Loose
Sale price¥9,800
Colombian emerald cat's eye 0.834ct loose
Sale price¥39,800
Colombian trapiche emerald (reverse trapiche) 0.107ct rough stone
Sale price¥9,800
Tanzanian Golden Sheen Sapphire 0.495ct Loose
Sale price¥6,980
Pink tourmaline 0.841ct loose stone
Sale price¥8,800
[Posted 12540116] Ethiopian opal 136.601ct rough stone
Sale price¥29,800
[12539978 published] Ametrine 1.386ct loose
Sale price¥45,800
Brazilian Paraiba tourmaline 96.184ct raw stone
Sale price¥8,800
[Posted 12541071] Emerald 162.375ct rough stone
Sale price¥9,800
[Posted 12541074] Emerald 77.265ct rough stone
Sale price¥6,980
[12541081 published] Emerald 9.380ct rough stone
Sale price¥4,980
Black opal 2.293ct loose
Sale price¥98,000
Mexican cantera opal 34.760ct loose
Sale price¥39,800
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.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
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.