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Less than 0.5 ct

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Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
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 Loose Oregon Sunstone from the USA, 0.318ct
Sold out Mexican Fire Opal (Faceted) 4.5mm/0.218ct Loose Stone
Sold out 0.278 ct loose Nigerian cobalt gahnite with Japanese and German appraisals
Sold out タンザニア産コーネルピン 0.173ctルース
Sold out Ruby 0.258ct loose
Sold out アメリカ産ドロマイトインアントヒルガーネット 4.5mm/0.435ctルース
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
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
Sold out ベトナム産非加熱シルキーピンクサファイア 0.202ctルース
Sold out Blue tourmaline 0.369ct loose Japanese-German book
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 Madagascar Purple Sapphire 4.2mm/0.418ct Loose
Sold out Unheated Vietnamese Silky Pink Sapphire 0.291ct Loose Stone
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam
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 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 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
Sold out モザンビーク産パライバトルマリン 0.227ctルース
Sold out コロンビア産エメラルド 0.381ct原石
Sold out ルビー 0.295ctルース
Sold out ケニア産ツァボライト 0.379ctルース
Sold out ミャンマー産トラピッチェルビー 0.250ctルース
Sold out ミャンマー産トラピッチェルビー 0.342ctルース
Sold out ミャンマー産トラピッチェルビー 0.216ctルース
Sold out アフガニスタン産ハックマナイト 0.418ctルース
Sold out 南アフリカ産スギライト 0.306ctルース
Sold out 南アフリカ産スギライト 0.358ctルース
Sold out ホースコンクパール(ダイオウイトマキボラ) 0.357ctルース
Sold out アフガニスタン産グリーンアウイナイト 0.098ctルース
Sold out 非加熱ブラジル産パライバトルマリン 0.170ctルース
Sold out ロードライトガーネット 0.410ctルース
Sold out ダイヤモンド原石(ソーヤブル) 0.416ct原石(トライゴン)
Sold out グリーンサファイア 0.299ctルース
Sold out ミャンマー産トラピッチェルビー 0.200ct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.