Paraiba tourmaline from Brazil 0.052ct loose
Sale price¥29,800
Brazilian Paraiba tourmaline 0.170ct loose stone (CuO: 2.1%, MnO: 1.1%)
Sale price¥198,000
Pigeon Blood Ruby 0.320ct Loose AIGS
Sale price¥48,800
Parasitic Peridot 0.292ct Loose Stone
Sale price¥98,000
![[12560832] Greenland Ruby 0.152ct Loose](http://store.karatz.jp/cdn/shop/files/PA171413.jpg?v=1760841583&width=4000)
[12560832] Greenland Ruby 0.152ct Loose
Sale price¥29,800
![[12560830] Greenland sapphire 0.328ct loose stone](http://store.karatz.jp/cdn/shop/files/PA171382.jpg?v=1767532283&width=4000)
[12560830] Greenland sapphire 0.328ct loose stone
Sale price¥39,800
![[12559773] Ruby 0.122ct loose stone](http://store.karatz.jp/cdn/shop/files/PA171226_c028b763-7907-435d-9290-5e6712686ee0.jpg?v=1767532283&width=2078)
[12559773] Ruby 0.122ct loose stone
Sale price¥14,800
![[12559771] Ruby 0.196ct loose stone](http://store.karatz.jp/cdn/shop/files/PA171192_2af83bea-027f-4c5a-8a17-f2285725032d.jpg?v=1767532284&width=2385)
[12559771] Ruby 0.196ct loose stone
Sale price¥18,800
![[12559515] Labradorite 0.816ct loose stone](http://store.karatz.jp/cdn/shop/files/PA170967.jpg?v=1767532285&width=4000)
[12559515] Labradorite 0.816ct loose stone
Sale price¥8,800
![[12559503] Australian white opal 0.697ct loose](http://store.karatz.jp/cdn/shop/files/PA170935.jpg?v=1760854565&width=4000)
[12559503] Australian white opal 0.697ct loose
Sale price¥8,800
Tanzanian Peristerite 5.1mm/0.503ct Loose Stone (Rose Cut)
Sale price¥9,800
Tanzanian Peristerite 5.1mm/0.458ct Loose Stone (Rose Cut)
Sale price¥9,800
Australian boulder opal 1.457ct loose stone
Sale price¥9,800
Brazilian London Blue Topaz 0.415ct Loose Stone
Sale price¥6,980
Brazilian Morganite 0.484ct loose stone
Sale price¥12,800
Brazilian Morganite 0.377ct loose stone
Sale price¥8,800
Brazilian Aquamarine 0.428ct Loose Stone
Sale price¥8,800
Australian Prehnite 1.758ct loose stone
Sale price¥9,800
Sri Lankan Peristerite 0.272ct Loose Stone
Sale price¥11,000
[Shinjuku Marui Annex 202511] Pigeon Blood Ruby 4.0mm/0.290ct Loose AIGS
Sale price¥59,800
Russian Demantoid Garnet (Horsetail) 2.5mm/0.075ct Loose Stone
Sale price¥12,800
Russian Demantoid Garnet (Horsetail) 2.5mm/0.073ct Loose Stone
Sale price¥14,800
Russian Alexandrite 0.088ct loose stone
Sale price¥59,800
Russian Alexandrite 0.058ct loose stone
Sale price¥49,800
Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate
Sale price¥45,800
Pakistani sphene 0.489ct loose stone
Sale price¥11,000
Pakistani sphene 0.396ct loose stone
Sale price¥9,800
German Auchenite 0.095ct loose stone
Sale price¥39,800
German Auchenite 0.085ct loose stone
Sale price¥45,800
German Auchenite 0.083ct loose stone
Sale price¥45,800
[Shinjuku Marui Annex 202511] Brazilian Bicolor Tourmaline 1.449ct Loose
Sale price¥19,800
Brazilian bicolor tourmaline 0.621ct loose stone
Sale price¥12,800
[12552640] Unheated Brazilian Paraiba Tourmaline 0.073ct loose stone
Sale price¥69,800
[12552618] Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone
Sale price¥65,800
Russian Emerald 0.387ct Loose Stone (F1, Minor Enhancement) GIA
Sale price¥128,000
Russian Emerald 0.282ct Loose Stone (F1, Minor Enhancement) GIA
Sale price¥128,000
Zimbabwean Blue Apatite (UV type) 1.189ct loose stone
Sale price¥12,800
[12551639] Triplite 0.322ct loose stone
Sale price¥15,800
[12549595 published] Goshenite 1.080ct loose
Sale price¥8,800
[12548919 published] Unheated bicolor sapphire 2.600ct loose
Sale price¥15,800
[Posted 12549094] Sri Lankan sapphire cat's eye 3.739ct loose
Sale price¥59,800
[Posted in 12548907] Yellow tourmaline 0.469ct loose
Sale price¥8,800
[12548587 published] Star sapphire from Sri Lanka 1.325ct loose
Sale price¥5,980
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.