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Sold out オレゴンサンストーン 5.189ctルース
Sold out ダイヤモンド 0.131ctルース(F, VS-1)
Sold out ミャンマー産トラピッチェルビー 0.261ct原石
Sold out ミャンマー産トラピッチェルビー 0.152ct原石
Sold out レッドベリル 0.131ctルース
Sold out Red beryl 0.173ct loose
Sold out コロンビア産トラピッチェエメラルド(逆トラピッチェ) 0.188ctルース
Sold out バイカラーサファイア 0.704ctルース
Sold out タンザニア産ピンクサファイア 0.566ctルース
Sold out マダガスカル産バイカラーサファイア 1.341ctルース
Sold out タンザニア産バイカラーサファイア 1.002ctルース
Sold out 【猫カット】ブラジル産ホワイトカルセドニー 0.707ctルース
Sold out アフガニスタン産アフガナイト 0.077ctルース
Sold out ケニア産ツァボライト 0.411ctルース
Sold out ブラジル産アンダリュサイト 7.656ctルース
Sold out スリランカ産グリーンジルコン 0.734ctルース
Sold out 合成ルチル 1.312ctルース
Sold out Synthetic rutile 1.681ct loose stone
Sold out 合成ルチル 3.637ctルース
Sold out Synthetic rutile 0.538ct loose stone
Sold out 合成ルチル 1.407ctルース
Sold out 合成ルチル 1.490ctルース
Sold out GGG(ガドリウムガリウムガーネット) 6.4mm/2.380ctルース
Sold out GGG (Gadolium Gallium Garnet) 1.424ct Loose Stone
Sold out GGG(ガドリウムガリウムガーネット) 0.675ctルース
Sold out レッドベリル 2.9mm/0.096ctルース
Sold out 【12544758掲載】ウッドオパール 24.319ctルース
Sold out Limited to 20 stones: 1 loose sphalerite stone from Spain. Discounts available for multiple purchases.
Sold out 《Limited to 13 stones》Beryl Gacha (including Aquamarine Vortex Cut Koshu Kiseki Kiriko) 1 Loose Stone《Multi-purchase discount available》
Sold out Limited to 11 stones: Bicolor Gacha (including Zimbabwean bicolor euclase, bicolor sapphire, and bicolor zoisite) (Multiple purchase discounts available)
Sold out Mexican Fire Agate 8.033ct Loose Stone
Sold out Indian Moonstone 5.0mm/0.474ct Loose Stone (Rose Cut)
Sold out German Apatite 3.1mm/0.100ct Loose Stone
Sold out German Auchenite 0.083ct loose stone
Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out Brazilian Paraiba tourmaline 0.128ct loose stone (CuO: 1.7%, MnO: 3.4%)
Sold out 0.361ct loose Brazilian Paraiba Tourmaline (CuO:1.0%, MnO:3.6%)
Sold out Royal Blue Sapphire 1.00ct Loose AIGS
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out 1.175ct loose Australian white opal
Sold out 0.848ct Loose Brazilian Medusa Quartz (Paraiba Quartz)
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.6mm/1.715ct Loose Stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 1.225ct Loose
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.0mm/1.099ct Loose Stone
Sold out Grandidierite from Madagascar 0.169ct loose stone
Sold out Grandidierite from Madagascar 0.167ct loose stone
Sold out 《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》

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.