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Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.438ct loose stone with certificate of authenticity
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out Loose 0.901ct Imperial Topaz from Brazil with certificate
Sold out 0.915ct Loose Ludwigite in Peridot from Pakistan
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.132ct Loose Stone
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Russian Phenakite 0.615ct Loose Stone
Sold out Mexican fire opal 0.235ct loose (facet cut)
Sold out Sri Lankan green zircon 0.312ct loose stone
Sold out Mexican Water Opal 4.8mm/0.289ct Loose
Sold out Tanzanian Mandarin Garnet Loose Stone 0.315ct
Sold out Kunzite from Afghanistan 0.971ct loose stone
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out Tanzanian Almandine Garnet 0.586ct Loose
Sold out Hessonite Garnet from Sri Lanka 0.530ct Loose Gemstone
Sold out Hessonite Garnet from Sri Lanka 0.681ct Loose
Sold out Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone
Sold out デュモルチェライトインクォーツ 3.814ct原石
Sold out タンザニア産レピドライト 1.035ctルース
Sold out インド産カバンサイト 2.163ctルース
Sold out ブラジル産インペリアルトパーズ 2.093ctルース
Sold out ブラジル産インペリアルトパーズ 0.359ctルース
Sold out Lazurite in quartz 0.353ct loose
Sold out Lazurite in quartz 0.877ct loose
Sold out Lazurite in quartz 0.959ct loose
Sold out Blue tourmaline 0.369ct loose Japanese-German book
coming soon Myanmar orange jade (jade) 0.531ct loose
Sold out ブラックダイヤモンド 0.983ctルース
Sold out ブラックダイヤモンド 1.125ctルース
Sold out アイスブルーダイヤモンド 1.008ctルース(FANCY INTENSE GREENISH BLUE, I1)
Sold out スファレライト 3.478ctルース
Sold out バイカラーサファイア 0.337ctルース
Sold out エメラルド 0.214ctルース
Sold out Jade (Jade) 0.437ct Ruth Japanese-German Dictionary
Sold out 翡翠(ヒスイ) 2.161ctルース
Sold out 北海道産ロードクロサイト1石ルース(6×4,オーバル)
Sold out モルガナイト 6.020ctルース
Sold out モルガナイト 4.240ctルース
Sold out ジンバブエ産ユークレース 0.430ctルース
Sold out ジンバブエ産ユークレース 1.675ctルース
Sold out デュモルチェライト (単結晶) 0.110ctルース
Sold out デュモルチェライト (単結晶) 0.150ctルース
Sold out ウィレマイト 0.390ctルース
Sold out ウィレマイト 0.460ctルース
Sold out ウィレマイト 0.50ctルース
Sold out スイートホーム産ロードクロサイト 0.610ctルース

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.