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Sold out ナミビア産ジェレメジェバイト 0.094ctルース 鑑別書

[On sale July 22nd at 10 PM] Jeremejevite from Namibia 0.094ct Loose Stone with Certification
Sold out タンザニア産バイカラーゾイサイト 1.136ctルース

Tanzanian Bicolor Zoisite 1.136ct Loose Stone with Certification

Sold out K18WG ダイヤモンド 0.2ct ペンダントトップ（ネックレストップ）

[On sale July 20 at 10 PM] Colorful K18WG Diamond 0.2ct Pendant Top (Necklace Top)
Sold out ザンビア産エメラルド 1.112ctルース 鑑別書

[On sale July 31, 10 PM] Zambian Emerald 1.112ct Loose Stone with Certificate

Sold out ザンビア産エメラルド 1.267ctルース

[On sale 7/31 at 10 PM] Zambian Emerald 1.267ct Loose Stone with Appraisal
Sold out グリーンゾイサイト 0.375ctルース

Tanzanian Green Zoisite 0.375ct Loose Stone

Sold out タンザニア産コーネルピン 0.196ctルース

[On sale July 19th at 10 PM] Tanzanian Kornerupine 0.196ct Loose Stone
Sold out メキシコ産ダンビュライト 4.146ctルース

【Sales Start: July 19, 10 PM JST】Mexican Danburite Loose Stone 4.146ct
Sold out マダガスカル産アパタイト 0.564ctルース

Madagascar Apatite 0.564ct Loose Stone [Sales start July 19, 10 PM JST]
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 1.170ctルース

[On sale 7/18 10 PM JST] Australian Rainbow Lattice Sunstone 1.170ct Loose Stone
Sold out アメリカ産オレゴンサンストーン 1.441ctルース

[On sale July 20th, 10 PM JST] USA Oregon Sunstone 7.0mm/1.441ct Loose Gemstone
Sold out ルビー 0.226ctルース

【Sale starts July 20 at 10 PM JST】Loose Mozambique Ruby, 0.226 ct
Sold out 南アフリカ産スギライト 0.806ctルース

[On Sale July 18th at 10 PM] South African Sugilite 0.806ct Loose Gemstone
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 0.294ctルース

[On sale July 17th, 10 PM JST] Australian Rainbow Lattice Sunstone Loose Gemstone, 0.294 ct
Sold out メキシコ産エッグインオパール 3.054ctルース

[Available from 10 p.m. on July 17th] Mexican egg-in-opal, 3.054 ct. loose stone
Sold out ブラジル産デュモルチェライトインクォーツ 0.957ctルース

[On sale July 16th at 10 PM] Brazilian Dumortierite in Quartz 0.957ct Loose Gemstone
Sold out 高知県産血赤珊瑚 1.524ctルース

[Sale starts July 16th at 10 PM] Kochi Prefecture produced blood red coral loose stone, 1.524ct
Sold out スリランカ産パープルサファイア 0.634ctルース

【掲載番号12563727】スリランカ産パープルサファイア 0.634ctルース
Sold out ビルマ産ピジョンブラッドルビー 0.300ctルース

[12563504 Listed] Unheated Pigeon Blood Ruby from Burma 0.300ct Loose
Sold out 【7/17 22時販売】《限定13石》通常25,800円のブラジル・バターリャ産パライバトルマリン（CuO：1.7％.MnO：1.9％）やユークレースなどブルーの宝石が当たるガチャ（おまけでハートシェイプ1石）《複数購入割引有》

【7/17 22時販売】《限定13石》通常25,800円のブラジル・バターリャ産パライバトルマリン（CuO：1.7％.MnO：1.9％）やユークレースなどブルーの宝石が当たるガチャ（おまけでハートシェイプ1石）《複数購入割引有》
Sold out [On Sale July 18th, 10 PM] Garnet Gacha: Win a Russian Horsetail Inclusion Demantoid Garnet, normally priced at 59,800 yen! 《Limited to 11 Stones》 《Quantity Discounts Available》

[On Sale July 18th, 10 PM] Garnet Gacha: Win a Russian Horsetail Inclusion Demantoid Garnet, normally priced at 59,800 yen! 《Limited to 11 Stones》 《Quantity Discounts Available》
Sold out [On sale July 19 at 10 PM JST] Pink Sapphire Gacha including "Sakura Incut" Sapphire (usually 79,800 JPY) + 1 White Sapphire (Limited to 11 Stones) (Multi-purchase discount available)

[On sale July 19 at 10 PM JST] Pink Sapphire Gacha including "Sakura Incut" Sapphire (usually 79,800 JPY) + 1 White Sapphire (Limited to 11 Stones) (Multi-purchase discount available)
Sold out K18 琥珀（こはく）/コパル ピアス

[Listed as 22602655] [Colorful] K18 Amber/Copal Earrings
Sold out K18 翡翠（ヒスイ） 1.051ct ペンダントトップ（ネックレストップ）

[Listed 22602671] [Karahuri] K18 Jadeite (Jade) 1.051ct Pendant Top
Sold out ブラジル産サンタマリアアクアマリン 0.361ctルース

【Posted on 12562262】Brazilian Santa Maria Aquamarine 0.361ct Loose Stone
Sold out ブラジル産アレキサンドライト 0.220ctルース

[Listed as 12563398] Brazilian Alexandrite 0.220ct Loose Stone
Sold out 《Limited to 10 stones》Color change gemstone gacha: color change zircon, alexandrite, color change garnet, etc. 《Multi-purchase discount available》

《Limited to 10 stones》Color change gemstone gacha: color change zircon, alexandrite, color change garnet, etc. 《Multi-purchase discount available》
Sold out パパラチアサファイア 0.897ctルース

[Published on 12563061] Padparadscha Sapphire 0.897ct Loose Stone
Sold out ジンバブエ産ユークレース 0.101ctルース

【12563376 listed】Euclase from Zimbabwe 0.101ct Loose
Sold out マダガスカル産バイカラーサファイア 0.506ctルース

Madagascar Bicolor Sapphire 0.506ct Loose
Sold out [On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"

[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"
coming soon 【12563833掲載】コロンビア産パイライトインエメラルド 2.988ctルース

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥298,000
coming soon 【12563834掲載】コロンビア産トラピッチェエメラルド 1.591ctルース

[Lottery Sale 0731_05] Colombian Trapiche Emerald 1.591ct Loose Gemstone with Japanese and German Gemological Certificates Sale price¥198,000
coming soon 【12563920掲載】メキシコ産カンテラオパール 5.085ctルース

【12563920 Listed】Mexican Cantera Opal 5.085ct Loose Stone Sale price¥25,800
coming soon 【12563921掲載】メキシコ産カンテラオパール 6.361ctルース

[Sale begins July 29th at 10 PM] Mexican Cantera Opal Loose Stone, 6.361 ct. Sale price¥18,800
coming soon 【12563947掲載】カシミール産非加熱サファイア 0.710ctルース

[Listed as 12563947] Unheated Kashmir Sapphire 0.710ct Loose Sale price¥398,000
coming soon [Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA

[Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA Sale price¥188,000
coming soon [Lottery Sale 0731_10] Colombian Non-Oil Emerald 0.370ct Loose Stone GIA

[Lottery Sale 0731_10] Colombian Non-Oil Emerald 0.370ct Loose Stone GIA Sale price¥298,000
coming soon 【12563932掲載】ブラジル産パーティカラートルマリン 15.355ctルース

[12563932 listed] Brazilian Parti-Color Tourmaline 15.355ct Loose Stone Sale price¥39,800
Sold out インド・オリッサ産アレキサンドライト 0.278ctルース 日独鑑

0.278ct Alexandrite Loose Stone from Orissa, India, with Japan-Germany Gemological Report

Sold out マダガスカル産パパラチアサファイア 0.305ctルース

[On sale July 28th at 10 PM] Madagascar Paparadscha Sapphire 4.0mm/0.305ct Loose Stone with Central Gem Lab Report
Sold out マダガスカル産パパラチアサファイア 0.159ctルース

[On sale July 30th at 10 PM] Madagascar Padparadscha Sapphire 0.159ct Loose Stone with Central Gem Lab Certificate
Sold out ブラジル産バイカラートルマリン 3.473ctルース

Brazilian Bicolor Tourmaline 3.473ct Loose Gemstone with Certificate of Authenticity

Sold out マダガスカル産非加熱ロイヤルブルーサファイア 1.030ctルース

[Lottery Sale 12] [For Winners Only] [Product ID: 12563980] Madagascar Unheated Royal Blue Sapphire 1.030ct Loose Gemstone, AIGS

coming soon [Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report

[Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report Sale price¥128,000

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.