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Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out 0.933 ct loose Brazilian aventurine beryl
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out パパラチアサファイア 0.191ctルース
Sold out 0.278 ct loose Nigerian cobalt gahnite with Japanese and German appraisals
Sold out オレゴンサンストーン 0.513ctルース
Sold out タンザニア産コーネルピン 0.173ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.852ctルース
Sold out Ruby 0.258ct loose
Sold out スモーキークォーツ 0.691ctルース
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
Sold out Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out ジンバブエ産バイカラーユークレース 0.197ctルース
coming soon Myanmar orange jade (jade) 0.531ct loose
Sold out Blue tourmaline 0.369ct loose Japanese-German book
Sold out Lazurite in quartz 0.959ct loose
Sold out Lazurite in quartz 0.877ct loose
Sold out Lazurite in quartz 0.353ct loose
Sold out ブラジル産インペリアルトパーズ 0.359ctルース
Sold out Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone
Sold out Hessonite Garnet from Sri Lanka 0.681ct Loose
Sold out Hessonite Garnet from Sri Lanka 0.530ct Loose Gemstone
Sold out Tanzanian Almandine Garnet 0.586ct Loose
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam
Sold out Kunzite from Afghanistan 0.971ct loose stone
Sold out Tanzanian Mandarin Garnet Loose Stone 0.315ct
Sold out Mexican Water Opal 4.8mm/0.289ct Loose
Sold out Sri Lankan green zircon 0.312ct loose stone
Sold out Mexican fire opal 0.235ct loose (facet cut)
Sold out Russian Phenakite 0.615ct Loose Stone
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.132ct Loose Stone
Sold out 0.915ct Loose Ludwigite in Peridot from Pakistan
Sold out Loose 0.901ct Imperial Topaz from Brazil with certificate
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.438ct loose stone with certificate of authenticity
Sold out Colombian oil-free emerald 0.17ct loose GIA

KARATZ Custom Made

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.

KARATZ・Five Commitments

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.