Birthstone list
Synthetic Blue Sapphire 2.012ct Loose (Synthetic Sapphire)
Sale price¥25,800
Mexican fire opal, 0.733 ct, loose
Sale price¥29,800
Mexican Opal 0.353ct Loose (Faceted Cut)
Sale price¥9,800
US Peridot 0.632ct Loose Stone
Sale price¥9,800
Tanzanian Rhodolite Garnet 1.765ct Loose Gemstone
Sale price¥18,800
Tanzanian Rhodolite Garnet 1.203ct Loose
Sale price¥12,800
Tanzanian Rhodolite Garnet 0.763ct Loose Stone
Sale price¥9,800
Mozambique Almandine Garnet 6.7mm/1.228ct Loose Stone
Sale price¥9,800
Mozambique Almandine Garnet 4.8nmm/0.545ct Loose Stone
Sale price¥8,800
0.521ct Loose Brazilian London Blue Topaz
Sale price¥6,980
American Peridot 0.643ct Loose Stone
Sale price¥12,800
Diamond 0.244ct Loose Stone (F, VS2, Flanders Cut)
Sale price¥39,800
0.209ct Yellow Diamond Loose (Fancy Deep Brownish Yellow, VVS-2)
Sale price¥49,800
0.174ct Brown Diamond Loose (FANCY DARK BROWN, SI-2)
Sale price¥25,800
Tanzanian Color Change Garnet 0.607ct Loose Stone
Sale price¥11,000
Sri Lankan Hessonite Garnet Loose Stone, 6.5mm/1.353ct
Sale price¥12,800
Sri Lankan Hessonite Garnet 0.441ct Loose Stone
Sale price¥8,800
Synthetic Blue Sapphire 0.886ct Loose (Synthetic Sapphire)
Sale price¥8,800
Mexican fire opal (faceted cut) 5.9mm/0.517ct loose stone
Sale price¥22,800
Brazilian Elestial Amethyst from Brazil, 15.928ct Loose Stone
Sale price¥45,800
Pink Tourmaline from Brazil 6.782ct Loose
Sale price¥69,800
Tanzanian Rhodolite Garnet 2.370 ct Loose Stone
Sale price¥19,800
Tanzanian Mandarin Garnet, 0.418 ct Loose Stone
Sale price¥25,800
0.175ct loose hot pink sapphire from Mozambique
Sale price¥15,800
Mexican Fire Opal 0.459ct Loose
Sale price¥18,800
Colombian emerald 0.155ct loose stone
Sale price¥29,800
YAG (Yttrium Aluminum Garnet) 0.598ct loose stone
Sale price¥9,800
Sri Lankan Blue Sapphire (Ice Blue) 0.272ct Loose
Sale price¥12,800
Tanzanian Bekiri Blue Garnet (Color Change Garnet) 0.102ct Loose Stone
Sale price¥12,800
Australian black opal 0.805ct loose stone
Sale price¥39,800
Australian black opal 0.565ct loose stone
Sale price¥29,800
Tanzanian Tanzanite, 5.0mm/0.558ct Loose Stone
Sale price¥15,800
Tanzanite 0.753ct loose stone from Tanzania
Sale price¥25,800
Tanzanian Rhodolite Garnet 1.194ct Loose Stone
Sale price¥15,800
Tanzanian Rhodolite Garnet 0.733ct Loose Stone
Sale price¥9,800
Sri Lankan Hessonite Garnet 1.674ct Loose Stone
Sale price¥15,800
0.796ct Loose Bicolor Grossular Garnet from Tanzania
Sale price¥39,800
Brazilian Santa Maria Aquamarine 0.669ct Loose Stone
Sale price¥39,800
Colombian mint-color emerald, 5.1mm/0.517ct loose stone
Sale price¥12,800
![[Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)](http://store.karatz.jp/cdn/shop/files/20260201_P2059052.jpg?v=1775550000&width=4000)
Diamond rough (makeable) 0.284ct rough
Sale price¥12,800
Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone
Sale price¥188,000
Colombian pyrite emerald 2.380ct rough stone
Sale price¥39,800
Colombian emerald 8.90ct rough stone
Sale price¥69,800
Australian Iron Opal 17.439ct Loose
Sale price¥18,800
Zambian bicolor tourmaline 4.142ct loose stone
Sale price¥98,000
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.