American Benitoite 0.158ct loose stone
Sale price¥59,800
American Benitoite 0.296ct loose stone
Sale price¥148,000
Madagascar Grandidierite 0.156ct loose stone
Sale price¥35,800
Brazilian bicolor tourmaline 0.880ct loose stone
Sale price¥12,800
Spanish Andalusite 4mm/0.204ct loose stone (rose cut)
Sale price¥4,980
Mongolian color change andesine 0.749ct loose stone
Sale price¥12,800
Mongolian color change andesine 0.665ct loose stone
Sale price¥12,800
Brazilian alexandrite 0.151ct loose
Sale price¥25,800
Sapphire from Sri Lanka (Safarin) 0.245ct loose
Sale price¥12,800
![[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch](http://store.karatz.jp/cdn/shop/files/P1185356.jpg?v=1752322391&width=4000)
[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch
Sale price¥19,800
Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone
Sale price¥12,800
Kenyan gold sheen sapphire 2.3mm/0.083ct loose
Sale price¥8,800
South African diamond rough stone 0.430ct
Sale price¥9,800
Sri Lankan Star Sapphire 0.725ct Loose
Sale price¥6,980
Brazilian Unheated Bicolor Paraiba Tourmaline 0.105ct Loose GIA
Sale price¥198,000
Sri Lankan Blue Sapphire (Ice Blue) 0.271ct Loose (Princess Cut)
Sale price¥12,800
Sri Lankan Rhodolite Garnet 0.244ct Loose Stone, Japan-Germany Scale
Sale price¥8,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Madagascar sphene 0.803ct loose stone
Sale price¥19,800
Brazilian Imperial Topaz 0.398ct Loose Stone
Sale price¥12,800
Zimbabwean Euclase 0.169ct Loose Stone with Certificate of Authenticity
Sale price¥39,800
[On sale at 10pm on August 17th] Aquamarine 0.680ct loose stone
Sale price¥14,800
Tanzanite from Tanzania 0.237ct loose stone
Sale price¥8,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.2mm/0.533ct Loose Stone
Sale price¥12,800
Orange calcite 0.740ct loose stone by Nikkei
Sale price¥9,800
Blue beryl (Macis beryl) 0.181ct loose stone
Sale price¥12,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Spanish Andalusite 0.657ct loose stone
Sale price¥9,800
Brazilian Aquamarine 0.176ct Loose Stone
Sale price¥8,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
Moldavite from former Czechoslovakia 0.094ct loose stone
Sale price¥6,980
American Red Beryl 0.217ct Loose
Sale price¥49,800
Pakistani Axinite (Blue Tint) 0.815ct Loose Stone
Sale price¥45,800
Synthetic Alexandrite 0.460ct loose stone
Sale price¥14,800
German Awinite 3.5mm/0.158ct loose stone
Sale price¥98,000
Brazilian Paraiba tourmaline 0.171ct loose stone (CuO: 1.7%, MnO: 2.3%)
Sale price¥98,000
Sri Lankan saffron 0.517ct loose stone, Japan-German
Sale price¥59,800
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.