![[12561489] Dumortierite in Quartz 16.250ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC052307_e2cd34a3-6362-4114-90a7-10db12df058e.jpg?v=1764982640&width=4000)
[12561489] Dumortierite in Quartz 16.250ct Loose Stone
Sale price¥9,800
![[12561472] Mexican egg-in opal 0.381ct loose stone](http://store.karatz.jp/cdn/shop/files/PC053061_b5067949-6512-42b3-bfb7-64364990b2eb.jpg?v=1764981563&width=4000)
[12561472] Mexican egg-in opal 0.381ct loose stone
Sale price¥18,800
![[12561462] Rubellite 0.332ct loose stone](http://store.karatz.jp/cdn/shop/files/PC052669_573bfabb-a3fa-4749-a911-92bb209cf659.jpg?v=1764981935&width=2896)
[12561462] Rubellite 0.332ct loose stone
Sale price¥12,800
![[12561453] Yellow sapphire 0.343ct loose stone](http://store.karatz.jp/cdn/shop/files/PC052779.jpg?v=1764981736&width=4000)
[12561453] Yellow sapphire 0.343ct loose stone
Sale price¥12,800
![[On Sale at 10 PM on December 5th] YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct Loose Stone](http://store.karatz.jp/cdn/shop/files/yag-65mm1548ct-257679.jpg?v=1764892582&width=1200)
[12/5 22:00 Sale] Black Star Sapphire 1.410ct Loose
Sale price¥9,800
![[12/5 10 PM Sale] Limited to 12 stones: 1 loose Chinese Xinsha stone (average 1.34 carats, all stones come with a certificate of authenticity) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA300332_e5634973-1738-4371-bc09-7b22ebdf6468.jpg?v=1764841346&width=3188)
![[Sale ends 12/5 at 10 PM] December Special Campaign! Limited to 14 stones. December Birthstone: Tanzanite, 1 loose stone (5x7mm, oval cut). Multiple purchase discounts available.](http://store.karatz.jp/cdn/shop/files/collage_ee07a74f-fdf6-4c00-8642-197524451793.png?v=1764825175&width=2250)
[12/5 22:00] Sri Lankan Triple Star Sapphire 2.057ct Loose
Sale price¥88,000
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥8,800
[Rouge cut] Almandine garnet 2.076ct loose
Sale price¥8,800
Australian opal 0.286ct loose
Sale price¥5,980
Blue zircon 0.397ct loose stone
Sale price¥6,980
Blue zircon 0.322ct loose stone
Sale price¥5,980
Oregon Sunstone 0.976ct loose
Sale price¥18,800
Amazon green opal 1.120ct loose
Sale price¥3,980
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥9,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥69,800
Bicolor Andesine 6mm/0.756ct loose
Sale price¥12,800
Pink spinel 0.409ct loose
Sale price¥6,980
Brazilian Rhodonite 2.126ct Ruth Japanese-German Edition
Sale price¥79,800
Australian boulder opal 3.695ct loose
Sale price¥14,800
Australian boulder opal 2.470ct loose
Sale price¥7,980
Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition
Sale price¥79,800
Pink tourmaline 0.516ct loose
Sale price¥5,980
Sri Lankan star sapphire 2.094ct loose
Sale price¥12,800
American red beryl 2.9mm/0.094ct loose
Sale price¥29,800
![[On sale at 10 PM on November 24th] [Limited to 7 stones] Sri Lankan Star Sapphire (Loose) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PB200371_c3076d59-ddd4-44cd-a2bc-c2c13f78b6f3.jpg?v=1763819038&width=3268)
[On Sale 11/23 10pm] 4.678ct Oregon Sunstone Loose Stone from the USA
Sale price¥69,800
Bicolor Andesine 6mm/0.852ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.824ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.699ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.783ct loose (color shift)
Sale price¥12,800
Sri Lankan star sapphire 1.487ct loose
Sale price¥8,800
Aventurine Aquamarine Cat's Eye 1.567ct Loose
Sale price¥4,980
Scapolite Cat's Eye 9.733ct Loose
Sale price¥6,980
Quartz 96.732ct loose (explosion crystal)
Sale price¥2,980
Bicolor tanzanite 0.479ct loose
Sale price¥18,800
Russian demantoid garnet (horsetail recognized) 5.2mm/0.702ct loose
Sale price¥158,000
Hemimorphite 34.490ct loose
Sale price¥55,800
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.