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0.5ct - 1.0ct

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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 Afghan Kunzite 5.6mm/0.897ct Loose
Sold out Loose Brazilian Medusa Quartz (Paraiba Quartz) 0.748ct
Sold out Sri Lankan Yellow Sapphire 0.526ct Loose
Sold out Cornflower Blue Sapphire 0.680ct Loose AIGS
Sold out マダガスカル産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.666ctルース
Sold out マダガスカル産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.570ctルース
Sold out ナイジェリア産モルガナイト 0.889ctルース
Sold out [Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.774ct Loose Stone
Sold out 【12560359掲載】ジンバブエ産バイカラーユークレース 0.654ctルース
Sold out Tanzanian Violet Sapphire 0.920ct Loose
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone
Sold out 0.848ct Loose Brazilian Medusa Quartz (Paraiba Quartz)
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out ピンクサファイア 0.881ctルース
Sold out トルコ産ダイアスポア 0.858ctルース
Sold out オパール 0.595ctルース
Sold out Citrine 0.833ct loose stone
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Madagascar Iolite 0.644ct Loose Stone
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
Sold out [12/9 22:00 Sale] Sinhalite from Sri Lanka 0.658ct Loose Stone
Sold out [12/10 22:00 Sale] Pakistani Ludwigite Peridot 0.609ct Loose Stone
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.811ct Loose Stone from the Republic of Mali with Certificate of Authenticity
Sold out バイカラータンザナイト 0.581ctルース
Sold out マダガスカル産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.696ctルース
Sold out [Sakura In-Cut] Tibetan Andesine 6.0mm/0.631ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
Sold out [Sakura In-Cut] Mali Garnet (Grossular/Andradite Garnet) from the Republic of Mali, 6.0mm/0.920ct Loose Stone with Certificate of Authenticity
Sold out Sri Lankan blue sapphire 0.645ct loose stone
Sold out Australian black opal 0.623ct loose stone
Sold out Australian Black Opal 0.825 ct Loose Stone
Sold out Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out ベリル 0.951ctルース
Sold out 【サンジェ氏】パープルスピネル 0.995ctルース
Sold out 0.559ct Sri Lankan Chrysoberyl Cat's Eye Loose Stone
Sold out Brazilian Goshenite 0.527ct loose stone
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.872ct Loose Stone from the Republic of Mali with Certificate of Authenticity
Sold out ロードライトガーネット 0.990ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 5.2mm/0.702ctルース
Sold out カラーチェンジサファイア 0.946ctルース
Sold out Tanzanian Almandine Garnet 0.998ct Loose Stone
Sold out タンザニア産アルマンディンガーネット 0.902ctルース
Sold out コンクパール 0.648ct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.