Round Cut
Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 0.497ct loose stone
Sale price¥9,800
Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 0.634ct loose stone
Sale price¥9,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Goshenite 5.7mm/0.572ct loose stone
Sale price¥5,980
Afghan Green Hauyne 3.6mm/0.135ct Loose with Certification
Sale price¥35,800
YAG (Yttrium Aluminum Garnet) 4.9mm/0.574ct loose stone
Sale price¥8,800
Pakistani Oil in Quartz 0.438ct Loose Stone
Sale price¥6,980
Zimbabwe Euclase 3.4mm/0.206ct Loose Stone with Certificate
Sale price¥29,800
Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone
Sale price¥18,800
Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline)
Sale price¥59,800
Myanmar red spinel 3.3mm/0.172ct loose
Sale price¥8,800
Burmese Red Spinel 3.5mm/0.214ct Loose Stone
Sale price¥9,800
Madagascar bicolor sapphire 3.7mm/0.271ct loose
Sale price¥6,980
Spanish Sphalerite 9.2mm/3.980ct loose stone
Sale price¥49,800
[12552038] Beryl Cat's Eye 32.703ct Loose Stone
Sale price¥98,000
Internally Flawless Diamond 4.4mm/0.320ct Loose (G, IF, 3Excellent) GIA
Sale price¥89,800
Synthetic Rutile 6.2mm/1.594ct Loose
Sale price¥15,800
Madagascar Yellow Sapphire 4.4mm/0.417ct Loose
Sale price¥14,800
Kunzite from Afghanistan 12mm/8.834ct loose stone
Sale price¥39,800
Diamond 3.7mm/0.197ct Loose (H, VS-1, Good)
Sale price¥29,800
Diamond 3.7mm/0.194ct Loose (H, VS-2, Excellent)
Sale price¥35,800
Diamond 3.7mm/0.190ct Loose (E, VVS-2, VeryGood)
Sale price¥34,800
Diamond 3.5mm/0.145ct Loose (F, VS-1, VeryGood)
Sale price¥26,800
Loose diamond 3.1mm/0.117ct (D, VVS-2, VeryGood)
Sale price¥23,800
Diamond 3.7mm/0.192ct Loose (F, VVS-2, VeryGood)
Sale price¥39,800
Diamond 3.7mm/0.184ct Loose (D, VS-1, VeryGood)
Sale price¥33,800
Brazilian Seafoam Tourmaline, 4.1mm/0.303ct loose stone
Sale price¥16,800
Brazilian Seafoam Tourmaline, 4.1mm/0.280ct Loose
Sale price¥15,800
Madagascar sphene 0.838ct loose stone
Sale price¥9,800
Detroit City Rhodochrosite 4mm/0.434ct Loose Stone
Sale price¥8,800
Jeremejevite 0.201ct loose stone
Sale price¥29,800
Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone
Sale price¥18,800
Goshenite 6.1mm/0.905ct loose stone
Sale price¥7,980
Purple Spinel 4.3mm/0.323ct Loose Stone
Sale price¥6,980
Violet spinel 0.301ct loose
Sale price¥6,980
Pink tourmaline 6.1mm/1.031ct loose stone
Sale price¥12,800
Synthetic alexandrite 4.3mm/0.379ct loose stone
Sale price¥9,800
Synthetic Alexandrite Loose Stone 5.8mm/0.979ct
Sale price¥22,800
Tanzanian Tanzanite 4.1mm/0.295ct Loose Stone
Sale price¥9,800
Internally Flawless Diamond 4.3mm/0.300ct Loose (F, IF, 3Excellent) GIA
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.