Specially selected items

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Pink imperial topaz 3.662ct loose medium treasure appraisal

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【12522995掲載】ロシア産デマントイドガーネット（ホーステール認む） 0.610ctルース

Russian demantoid garnet (horsetail recognized) 0.610ct loose

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【ダンデライオンカット】アルマンディンガーネット 1.60ctルース - カラッツSTORE

[Dandelion cut] Almandine garnet 1.60ct loose

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[Koshu Precious Stone Kiriko] Dumortierite in Quartz

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【セミオーダー代込】さくらインカットのウォーターオパール（メキシコオパール）リング - KARATZ STORE｜カラッツSTORE

[Sakura Incut] Water Opal (Mexican Opal) Ring

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【さくらインカット】Pt950スイスブルートパーズ3.42ct リング - KARATZ STORE｜カラッツSTORE

[Sakura Incut] Pt950 Swiss Blue Topaz 3.42ct Ring

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ブラジル産パライバトルマリン 0.320ctルース GIA付 - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.320ct loose with GIA

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ビルマ産ピジョンブラッドルビー 0.56ctルース GRS付 - KARATZ STORE｜カラッツSTORE

Burmese pigeon blood ruby 0.56ct loose with GRS

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ビルマ産ピジョンブラッドルビー 0.57ctルース GRS付 - KARATZ STORE｜カラッツSTORE

Burmese pigeon blood ruby 0.57ct loose with GRS

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K18PGモルガナイト0.70ct ペンダントトップ（ダンデライオンカット） - KARATZ STORE｜カラッツSTORE

[Dandelion Cut] K18PG Morganite 0.70ct Pendant Top

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ユークレース 0.222ctルース - KARATZ STORE｜カラッツSTORE

Bicolor tourmaline 15.230ct loose

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K18PGロードライトガーネット1.48ct ペンダント（ダンデライオンカット） - KARATZ STORE｜カラッツSTORE

[Dandelion Cut] K18PG Rhodolite Garnet 1.48ct Pendant

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Colombian non-oil trapiche emerald 2.00ct loose GIA

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オレゴンサンストーン 0.779ctルース - KARATZ STORE｜カラッツSTORE

Paraiba tourmaline from Brazil 0.32ct loose with GIA

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アイスブルーダイヤモンド 1.021ctルース(FANCY INTENSE BLUE GREEN, I1) - KARATZ STORE｜カラッツSTORE

Ice blue diamond 1.021ct loose (FANCY INTENSE BLUE GREEN, I1, radiant cut)

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ダイヤモンド 0.082ctルース（トリリアントカット） - KARATZ STORE｜カラッツSTORE

Diamond 0.082ct loose (trilliant cut)

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パパラチアサファイア 0.282ctルース中宝鑑付 - KARATZ STORE｜カラッツSTORE

Padparadscha sapphire 0.282ct loose medium treasure appraisal

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【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¥228,000

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[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

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【9/5(土)AM10時〆：抽選販売_04】ロシア産デマントイドガーネット（ホーステール認む） 6.3mm/1.170ctルース GIA Sale price¥558,000

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[Lottery Sale 0829] Anglesite 4.400ct Loose Stone Sale price¥388,000

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[Published in 12564187] Alexandrite from Madagascar 1.870ct Loose Stone Sale price¥798,000

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【12564185 Published】Sri Lankan Unheated Color Change Sapphire 1.170 ct Loose Stone Sale price¥298,000

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[Published on 12564175] Sri Lankan Spinel 3.419ct Loose Stone Sale price¥188,000

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【Lottery Sale 0829】Bolivian Phosphophyllite 2.589ct Loose Stone Sale price¥1,280,000

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[Lottery Sale 0829] Colombian Non-Oil Emerald 0.290ct Loose Stone Sale price¥188,000

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【12564163掲載】ブルガリア産グリーンスファレライト 3.608ctルース

[Lottery Sale 0829] Bulgarian Green Sphalerite 3.608ct Loose Gemstone Sale price¥328,000

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【Lottery Sale 0829】Internally Flawless Diamond (H&C) 0.413ct Loose Stone (D, IF, 3Excellent H&C) Sale price¥188,000

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[Lottery Sale 0829] Colombian Non-Oil Emerald 0.600ct Loose Stone Sale price¥348,000

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[Lottery Sale 0829] Unheated Kashmir Sapphire 1.170ct Loose Gemstone Sale price¥658,000

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[Lottery Sale 0829] Unheated Kashmir Sapphire 0.510ct Loose Stone Sale price¥398,000

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[Lottery Sale #2_202608_11] Myanmar Poudretteite 0.375ct Loose Stone, Japan/Germany Certificate Sale price¥598,000

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【12562714掲載】ブラジル産バイカラーピンクユークレース 3.210ctルース

【Lottery Sale ②_202608_12】Brazilian Bi-Color Pink Euclase 3.210ct Loose Stone with Japan-Germany Gemological Report Sale price¥698,000

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[Authenticity Check] American Bicolor Benitoite 0.282ct Loose Stone

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Unheated Kashmir Sapphire 0.260ct Loose Stone GIA

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Unheated Kashmir sapphire 0.210ct loose GIA

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Chinese Cinnabar (Cinnabar) 1.162ct Loose Stone with Certificate of Authenticity

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ロシア産デマントイドガーネット（ホーステール認む） 4.4mm/0.394ctルース

Russian demantoid garnet (horsetail recognized) 4.4mm/0.394ct loose

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Padparadscha Sapphire 6.4mm/1.208ct Loose Medium Treasure Guide

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Unheated Sri Lankan Sapphire 1.550ct Loose GIA (Silk Inclusion)

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[On sale from 10pm on 5/4] Russian oil-free emerald 0.84ct loose GIA

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Myanmar Star Spinel 2.626ct Loose

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Russian diamond rough (sawable) 0.618ct rough (trigon)

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ブラジル産パライバトルマリン・ダイヤモンド１３石ハーフエタニティリングセット（2.0mm)

Brazilian Paraiba Tourmaline and Diamond 13 Stone Half Eternity Ring Set (2.0mm)

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American Wulfenite 2.610ct loose stone

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Tanzanian bicolor sapphire 0.818ct loose stone (tricolor sapphire)

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.