List of products eligible for patches

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【甲州貴石切子plusthree】ピクチャーメノウ 10.362ctルースワッペン付

[Koshu Precious Stones plusthree] Picture Agate 10.362ct Loose Stone

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【甲州貴石切子plusthree】ロンドンブルートパーズ 2.461ct《コラボ》ルース《暁》ワッペン付

[Koshu Precious Stones Plusthree] Brazilian London Blue Topaz 2.461ct Loose

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【甲州貴石切子plusthree】ラベンダークォーツ（スコロライト） 2.566ctルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Lavender Quartz (Scorolite) 2.566ct Loose Patch

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[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch

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[Sakura In-Cut] Tanzanian Pink Spinel 6.0mm/0.842ct Loose Stone with Certificate of Authenticity

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

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[Yukinko Cut] Tanzanite from Tanzania 1.486ct Loose Stone

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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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【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

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[Sakura In-Cut] Pink Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.924ct Loose

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[Koshu Precious Stones Plusthree] Brazilian Citrine 1.121ct Loose Stone Patch

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【さくらインカット】レピドクロサイトインクォーツ 7mm/1.007ct《コラボ》ルースワッペン

[Sakura Incut] Brazilian Lepidocrocite in Quartz 7mm/1.007ct {Collaboration} Loose Patch

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Sakura Shape Brazilian Topaz 8.1mm/2.211ct Loose Stone

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【甲州貴石切子plusthree】ペリステライト（ロイヤルブルームーンストーン） 1.50ctルース

Koshu Precious Stones Plusthree Indian Peristerite (Royal Blue Moonstone) 1.50ct Loose

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【甲州貴石切子plusthree】ロジャリーフローライト 4.560ctルース暁《コラボ》ワッペン付

[Koshu Precious Stones Plusthree] British Rogerian Fluorite 4.560ct Loose Stone

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【ダンデライオンカット】ピンクスピネル 5.7mm/0.845ct ルース《コラボ》日独鑑ワッペン付

[Dandelion cut] Myanmar pink spinel 5.7mm/0.845ct loose stone by Nikkei Kane

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【ダンデライオンカット】グリーントルマリン 2.156ctルース《コラボ》ワッペン付

[Dandelion Cut] Brazilian Green Tourmaline 8mm/2.156ct Loose Stone

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【甲州貴石切子】ティンカーベルクォーツ（ピンクファイヤークォーツ） 5.560ctルース

[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.560ct Loose Patch

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[Koshu Precious Stone Cutting] Brazilian Sky Blue Topaz 10.60ct Loose Stone [Collaboration] Patch

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Canna Brazilian dendritic quartz 2.389ct loose stone

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Almandine Garnet 2.996ct Loose Stone

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[Dandelion Cut] Synthetic Rutile 7.5mm/2.169ct Loose Stone

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[Koshu Precious Stones plusthree] Brazilian rose quartz 8.940ct loose stone

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【甲州貴石切子plusthree】合成モアッサナイト 13.0mm/7.179ctルース

[Koshu Precious Stones Plusthree] Synthetic Moissanite 13.0mm/7.179ct Loose Stone

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[Sakura Incut] Strontium titanate 6.5mm/1.589ct loose stone

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[Koshu Precious Stones plusthree] Madagascar Apatite 1.990ct Loose Stone [Collaboration] Patch

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[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz 3.790ct Loose Stone [Collaboration] Patch

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【甲州貴石切子】ティンカーベルクォーツ（ピンクファイヤークォーツ） 5.540ctルース

[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.540ct Loose Stone [Collaboration] Patch

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[Koshu Precious Stone Cutting] Fluorite in Quartz 6.420ct Loose Stone [Collaboration] Patch

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[Koshu Precious Stones Plusthree] Sri Lankan Hessonite Garnet 0.99ct Loose Color "Collaboration" Patch

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[Koshu Precious Stones plusthree] Madagascar Sphene 1.471ct Loose Stone [Collaboration] Patch

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[Koshu Precious Stones plusthree] Bicolor Fluorite 5.030ct Loose Stone

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[Koshu Precious Stones plusthree] Madagascar Apatite 2.310ct Loose Color "Collaboration" Patch

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【甲州貴石切子】バイカラーフローライト 20.850ctルース《コラボ》ワッペン付

[Koshu Precious Stone Cut] Bicolor Fluorite 20.850ct Loose Stone [Collaboration] Patch

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【さくらインカット】ブルートパーズ 15.640ctルース - カラッツSTORE

[Sakura In-Cut] Brazilian Blue Topaz 16mm/15.640ct Loose Stone

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[Koshu Precious Stone Cut] Scololite 5.350ct Loose Stone Patch

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【さくらシェイプ】タンザニア産カラーチェンジサファイア 7.1mm/1.667ctルース

[Sakura Shape] Tanzanian Color Change Sapphire 7.1mm/1.667ct Loose

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[Koshu Precious Stone Cut] Brazilian Bicolor Tourmaline 4.150ct Loose Patch

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[Clover in cut] Cambodian blue zircon (Ratanakiri blue) 6.0mm/1.120ct {Collaboration} Loose

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[Dandelion Cut] Rhodolite Garnet 1.115ct {Collaboration} Loose Stone

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【クローバーインカット】モンゴル産カラーチェンジアンデシン 6.0mm/0.608ct《コラボ》ルース

[Clover in cut] Mongolian color change andesine 6.0mm/0.608ct {collaboration} loose stone

coming soon

[Sakura Cut] White Sapphire from Ratnapura, Sri Lanka 6.0mm/0.818ct "Collaboration" Loose Gemstone Sale price¥98,000

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[Clover in cut] Madagascar Apatite 6.0mm/0.796ct {Collaboration} Loose Stone

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【さくらインカット】タンザニア産タンザナイト 6.0mm/0.745ct《コラボ》ルース

[Sakura Incut] Tanzanite from Tanzania 6.0mm/0.745ct {Collaboration} Loose Stone

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【さくらインカット】スペイン産アンダリュサイト 6.0mm/0.700ct《コラボ》ルース

[Sakura Incut] Spanish Andalusite 6.0mm/0.700ct {Collaboration} 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.