Russian demantoid garnet (horsetail recognized) 3.8mm/0.232ct loose
Sale price¥18,800
Diamond 0.051ct loose (trapeze cut, VS class equivalent)
Sale price¥9,800
Diamond 0.777ct loose (butterfly cut)
Sale price¥77,777
Brazilian bicolor tourmaline 7.489ct loose
Sale price¥49,800
Brazilian dumortierite in quartz 4.592ct loose
Sale price¥15,800
Pink tourmaline 1.690ct loose
Sale price¥39,800
Bicolor tanzanite 0.581ct loose
Sale price¥23,800
Chrome tourmaline 0.300ct loose stone
Sale price¥3,980
Yellow diamond rough stone (makeable) 0.247ct rough stone
Sale price¥22,800
Sri Lankan Goethite Into Topaz 3.200ct loose
Sale price¥7,980
Tanzanite 1.593ct loose
Sale price¥15,800
Tanzanite 1.297ct loose
Sale price¥12,960
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥45,800
White topaz 16.06ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥59,800
Paraiba tourmaline from Mozambique 0.256ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.207ct loose
Sale price¥12,800
Indigolite tourmaline 0.260ct loose Japanese-German book
Sale price¥18,800
Myanmar star diopside 0.898ct loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥8,800
Paraiba tourmaline from Mozambique 0.215ct loose
Sale price¥12,800
Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%)
Sale price¥98,000
Paraiba tourmaline from Mozambique 0.229ct loose
Sale price¥12,800
Pink tourmaline 0.394ct loose
Sale price¥8,800
Paraiba tourmaline from Mozambique 0.388ct loose
Sale price¥24,800
Paraiba tourmaline from Mozambique 0.272ct loose
Sale price¥15,800
Paraiba tourmaline from Mozambique 0.596ct loose
Sale price¥29,800
Paraiba tourmaline from Mozambique 0.273ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.228ct loose
Sale price¥12,800
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥598,000
Bicolor tanzanite 0.479ct loose
Sale price¥24,800
Russian demantoid garnet (horsetail recognized) 5.2mm/0.702ct loose
Sale price¥228,000
Pink tourmaline 0.516ct loose
Sale price¥6,980
Pink tourmaline 4.0mm/0.300ct loose stone
Sale price¥6,980
Paraiba tourmaline from Mozambique 0.243ct loose
Sale price¥19,800
Brazilian bicolor tourmaline 1.554ct loose (tricolor tourmaline)
Sale price¥25,800
Myanmar trapichel ruby 0.179ct rough stone
Sale price¥3,980
Myanmar trapichel ruby 0.160ct rough stone
Sale price¥5,980
Myanmar trapichel ruby 0.152ct rough stone
Sale price¥4,980
Trapichel ruby from Myanmar 0.202ct rough stone
Sale price¥3,980
Myanmar trapichel ruby 0.261ct rough stone
Sale price¥4,980
Bicolor tourmaline 22.088ct loose
Sale price¥288,000
Blue tourmaline from Afghanistan 4.5mm/0.326ct loose
Sale price¥8,800
Pink diamond 2.2mm/0.044ct loose (FANCY PURPLE PINK, I-1)
Sale price¥39,800
Colombian trapiche emerald (reverse trapiche) 0.072ct loose
Sale price¥8,800
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.