¥30,000 - ¥50,000

coming soon

Brazilian Herderite 0.509ct loose stone Sale price¥35,800

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[12548254 published] Padparadscha sapphire 0.474ct loose

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Pink diamond 2.2mm/0.041ct loose (FANCY LIGHT PURPLE PINK, SI2) Sale price¥49,800

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Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)

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Brazilian Santa Maria Aquamarine 0.669ct Loose Stone

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Star Ruby from Sri Lanka, 5.0mm/1.062ct Loose Stone, with Identification Report

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German Auchenite 0.083ct loose stone

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[12/10 22:00] Mali Garnet (Grossular/Andradite Garnet) 1.008ct Loose Stone from the Republic of Mali with Certificate of Authenticity

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[Sakura In-Cut] Mongolian Color Change Andesine 6.0mm/0.655ct Loose Stone

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Madagascar sphene 6.0mm/0.868ct loose stone

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Loose 1.206ct Oregon Sunstone from the USA

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Red Coral from Kochi Prefecture (6.833ct Loose Stone)

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Zimbabwean Bicolor Euclase 0.206ct Loose Stone

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Russian demantoid garnet (horsetail recognized) 0.110ct loose

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Pakistani Veirinite 0.145ct Loose Stone with Certificate of Authenticity

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Ruby 0.295ct loose

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Russian Alexandrite 0.058ct loose stone

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【32501456掲載】ピンクダイヤモンド（プリンセスカット） 0.089ctルース(FANCY LIGHT PURPLISH PINK, I-1)

[Posted in 32501456] Pink Diamond (Princess Cut) 0.089ct Loose (FANCY LIGHT PURPLISH PINK, I-1)

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イエローダイヤモンド 0.706ctルース(FANCY DEEP ORANGY YELLOW, I-1)

[Posted in 32501430] Yellow Diamond 0.706ct Loose (FANCY DEEP ORANGY YELLOW, I-1)

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Burmese bicolor spinel 0.849ct loose

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[Star-in-cut] YAG (Yttrium Aluminum Garnet) 1.480ct Loose Gemstone with Certificate

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[Sakura Shape] YAG (Yttrium Aluminum Garnet) 2.026ct Loose Stone with Appraisal

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【32501256掲載】イエローダイヤモンド 0.167ctルース(FANCY VIVID ORANGY YELLOW, VS-2)

[Posted in 32501256] Yellow Diamond 0.167ct Loose (FANCY VIVID ORANGY YELLOW, VS-2)

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グリーンイエローダイヤモンド 0.502ctルース(VERY LIGHT GREEN YELLOW, I1)

Green yellow diamond 5mm/0.502ct loose (VERY LIGHT GREEN YELLOW, I1)

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[Dandelion cut] Morganite 7mm/1.02ct loose with patch

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【ダンデライオンカット】スピネル 5.7mm ルース《コラボ》（パープリッシュグレイ）ワッペン付

[Dandelion Cut] Spinel 5.7mm Loose "Collaboration" (Purplish Gray) with Patch

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[Koshu Precious Stone Kiriko] Spodumene 7.390ct loose "Collaboration" with emblem

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[Koshu Precious Stone Kiriko] Spodumene 8.480ct《Collaboration》Loose with emblem

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【甲州貴石切子】ロードライトガーネット 2.374ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Rhodolite Garnet 2.374ct《Collaboration》 Loose with emblem

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[Koshu Precious Stone Kiriko] Spodumene 14.070ct《Collaboration》Loose with emblem

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[12539978 published] Ametrine 1.386ct loose

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【ダンデライオンカット】YAG（イットリウムアルミニウムガーネット）8mm/2.752ctルース

[Dandelion cut] YAG (yttrium aluminum garnet) 8mm/2.752ct loose

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【甲州貴石切子plusthree】合成モアッサナイト 8mm/1.502ct《コラボ》ルースワッペン付

[Koshu precious stone Kiriko plusthree] Synthetic moissanite 8mm/1.502ct《Collaboration》 Loose with patch

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【甲州貴石切子plusthree】デンドリティッククォーツ 45.929ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Dendritic quartz 45.929ct loose with emblem

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【甲州貴石切子plusthree】ピクチャーメノウ 8.525ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Picture agate 8.525ct loose with patch

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【甲州貴石切子】ライモナイトインクォーツ（オーロラクォーツ） 8.066ctルース

[Koshu Precious Stone Cutting] Brazilian Limonite in Quartz (Aurora Quartz) 8.066ct Loose

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[Dandelion cut] Synthetic rutile 7mm/1.905ct loose

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【甲州貴石切子plusthree】メデューサクォーツ（パライバクォーツ） 7.432ctルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Medusa Quartz (Paraiba Quartz) 7.432ct Loose Patch

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[Koshu Precious Stones] Brazilian Aquamarine 5.209ct Loose Stone with Certificate of Authenticity

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Madagascar Padparadscha Sapphire 0.240ct Loose GIA

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Yellow Diamond (Cabochon Cut) 0.324ct Loose

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【ダンデライオンカット】YAG（イットリウムアルミニウムガーネット） 9mm/4.121ct《コラボ》ルースワッペン付

[Dandelion Cut] YAG (Yttrium Aluminum Garnet) 9mm/4.121ct Loose Patch

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Zimbabwe bicolor euclase 0.231ct loose stone

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Namibian Jeremejevite 0.136ct loose stone with certificate

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【甲州貴石切子pluesthree】合成モアッサナイト《コラボ》4.02ctルースワッペン付

[Koshu Precious Stones Plusthree] Synthetic Moissanite 10mm/4.02ct Loose Patch

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【甲州貴石切子plusthree】合成モアッサナイト 5.570ct《コラボ》ルースワッペン付

[Koshu Precious Stones Plusthree] Synthetic Moissanite 12mm/5.570ct Loose Patch

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【甲州貴石切子】コニャックジルコン 10.930ctルース《コラボ》ワッペン付《12月新誕生石》

[Koshu Precious Stone Cut] Cognac Zircon 10.930ct Loose Stone [Collaboration] Patch

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[Koshu Precious Stone Cut] Hematite in Quartz 5.155ct Loose Patch

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.