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誕生石一覧

Birthstone list

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Sold out Brazilian Indicolite Tourmaline 0.342ct Loose
Sold out Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS
Sold out Unheated Madagascar Purple Sapphire 1.170ct Loose GIT
Sold out 18K Yellow Gold American Peridot 0.339ct Diamond Ring
Sold out 南アフリカ産ダイヤモンド(メイカブル) 0.193ct原石
coming soon ブラジル産パライバトルマリン 0.132ctルース(CuO:2.1%.MnO:2.2%)
Sold out 【12546496掲載】ベトナム産非加熱シルキーピンクサファイア 0.161ctルース
Sold out Colombian oil-free emerald 0.17ct loose GIA
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 0.939 ct Loose 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 Mexican fire opal 0.235ct loose (facet cut)
Sold out Tanzanian Mandarin Garnet Loose Stone 0.315ct
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out Unheated Vietnamese Silky Pink Sapphire 0.291ct Loose Stone
Sold out Madagascar Purple Sapphire 4.2mm/0.418ct 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 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 Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.447ctルース
Sold out Ruby 0.258ct loose
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.665ctルース
Sold out ザンビア産アメジスト 29.357ct原石
Sold out ザンビア産アメジスト 39.112ct原石
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone
Sold out Mexican Fire Opal (Faceted) 4.5mm/0.218ct Loose Stone
Sold out パパラチアサファイア 0.191ctルース
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS

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.