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Sold out Gray Diamond 0.200ct Loose (FANCY DARK GRAY, SI-2)

Gray Diamond 0.200ct Loose (FANCY DARK GRAY, SI-2)
Sold out ボリビア産フォスフォフィライト 0.512ctルース

Bolivian Phosphophyllite 0.512ct Loose Gemstone with Certificate

Sold out オーストラリア産レインボーラティスサンストーン 0.353ctルース

Australian rainbow lattice sunstone 0.353ct loose
Sold out 【12562074掲載】ブラジル産ライモナイトインクォーツ（オーロラクォーツ） 1.894ctルース

Brazilian Limonite in Quartz (Aurora Quartz) 1.894ct Loose Stone
Sold out オーストラリア産レインボーラティスサンストーン 0.587ctルース

Australian rainbow lattice sunstone 0.587ct loose
Sold out モンタナサファイア 0.458ctルース

Montana Sapphire 0.458ct Loose (Bi-Color Sapphire)
Sold out モンタナサファイア 0.416ctルース

Montana Sapphire 0.416ct Loose (Bi-Color Sapphire)
Sold out American Neptunite 0.207ct Loose Stone with Certificate of Authenticity

American Neptunite 0.207ct Loose Stone with Certificate of Authenticity
Sold out 【12562061掲載】アメリカ産ネプチュナイト 0.256ctルース

0.256ct Neptunite from the USA, with a certificate

Sold out American Neptunite 0.290ct Loose Stone with Certificate of Authenticity

American Neptunite 0.290ct Loose Stone with Certificate of Authenticity
Sold out Datolite from the USA, 0.592ct Loose Stone (Westfield, Manchester)

Datolite from the USA, 0.592ct Loose Stone (Westfield, Manchester)

coming soon 【12562018掲載】ブラジル産ヘルデライト 0.509ctルース

Brazilian Herderite 0.509ct loose stone Sale price¥35,800
Sold out 0.084ct loose green diamond (FANCY GRAY GREEN, I-1)

0.084ct loose green diamond (FANCY GRAY GREEN, I-1)

Sold out 【12561168掲載】メキシコ産ウォーターオパール（ファセットカット） 0.349ctルース

Mexican Water Opal (Faceted, Contralus Opal) 0.349ct Loose
Sold out ピンクサファリン 0.178ctルース

0.178ct Madagascar Pink Sapphire Loose Stone, Japan-German

Sold out Tanzanite from Tanzania 0.331ct loose stone

Tanzanite from Tanzania 0.331ct loose stone
Sold out Silky sapphire from Vietnam, 1.169ct loose stone

Silky sapphire from Vietnam, 1.169ct loose stone

Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania

0.745ct loose bicolor sapphire from Windsor, Tanzania

Sold out Oregon Sunstone from the United States, 8.338ct loose stone

Oregon Sunstone from the United States, 8.338ct loose stone
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース

Pink Diamond 0.296ct Loose (Cabochon Cut) Certificate of Authenticity
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose

Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 0.498ct Loose Stone

Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 0.498ct Loose Stone
Sold out Tanzanian Kornerupine 0.103ct Loose Stone

Tanzanian Kornerupine 0.103ct Loose Stone
Sold out Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan

Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan
Sold out Grandidierite from Madagascar 0.167ct loose stone

Grandidierite from Madagascar 0.167ct loose stone
Sold out Grandidierite from Madagascar 0.169ct loose stone

Grandidierite from Madagascar 0.169ct loose stone
Sold out Royal Blue Sapphire 1.00ct Loose AIGS

Royal Blue Sapphire 1.00ct Loose AIGS

Sold out 0.361ct loose Brazilian Paraiba Tourmaline (CuO:1.0%, MnO:3.6%)

0.361ct loose Brazilian Paraiba Tourmaline (CuO:1.0%, MnO:3.6%)
Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out Sri Lankan blue sapphire 0.645ct loose stone

Sri Lankan blue sapphire 0.645ct loose stone
Sold out エチオピアサンストーン 0.505ctルース

Ethiopian Sunstone 0.505ct Loose
Sold out ロシア産フェナカイト 0.899ctルース

Russian Phenakite 0.899ct Loose Stone

Sold out バイカラーサファイア 0.299ctルース

Tanzanian bicolor sapphire 0.299ct loose stone
Sold out アフガニスタン産クンツァイト 0.753ctルース

Kunzite from Afghanistan 0.753ct loose stone
Sold out ロシア産アレキサンドライト 0.074ctルース

Russian Alexandrite 0.074ct loose stone
Sold out タンザニア産ミントダイオプサイド 0.290ctルース

Tanzanian mint diopside 0.290ct loose stone
Sold out ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 0.201ctルース

Brazilian unheated pink imperial topaz (sherry pink) 0.201ct loose stone
Sold out Tanzanian Malaya Garnet 0.569ct Loose Stone

Tanzanian Malaya Garnet 0.569ct Loose Stone
Sold out パパラチアサファイア 0.251ctルース

Padparadscha Sapphire 0.251ct Loose Stone
Sold out パパラチアサファイア 0.376ctルース

Padparadscha Sapphire 0.376ct Loose Stone
Sold out ロシア産アレキサンドライト 0.058ctルース

Russian Alexandrite 0.058ct loose stone
Sold out トリプライト 0.322ctルース

[12551639] Triplite 0.322ct loose stone
Sold out ロシア産アレキサンドライト 0.333ctルース

0.333ct loose alexandrite from Russia

Sold out ジンバブエ産バイカラーユークレース 0.352ctルース

Zimbabwean Bicolor Euclase 0.352ct Loose Stone
Sold out アフガニスタン産クンツァイト 3.340ctルース

Kunzite from Afghanistan 3.340ct loose stone
Sold out ブラジル産グリーントルマリン 0.490ctルース

Brazilian green tourmaline 0.490ct loose stone

Sold out タンザニア産サンストーン（イリュージョンサンストーン） 0.627ctルース

Tanzanian Sunstone (Illusion Sunstone) 0.627ct Loose Stone
Sold out 合成ルチル 1.362ctルース

Synthetic rutile 1.362ct loose stone

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.