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甲州貴石切子

Koshu precious stone cut glass

Koshu Precious Stone Kiriko was developed by applying cutting techniques such as Edo Kiriko and Satsuma Kiriko. It was born from a collaboration between Yoichi Fukazawa of Jewelry Craft Fukazawa and Yukio Shimizu of Shimizu Precious Stone. Koshu Precious Stone Kiriko is made using a cutting method that is a world first, with Fukazawa in charge of the cut surfaces and Shimizu in charge of the facet surfaces. The stunning cuts, full of originality and like works of art, are combined with the individuality of the gemstones to make them truly one of a kind. There are dozens of patterns in total that combine surface cuts such as rose cuts and checkerboard cuts with several types of cut glass, and it is also possible to enjoy the luxury of collecting and arranging stones with various cuts.

Carats Gem Magazine
" Koushuu precious stone cut glass "

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【甲州貴石切子plusthree】バイカラートルマリン 2.694ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Bicolor tourmaline 2.694ct loose with patch Sale price¥35,800
【甲州貴石切子】レピドクロサイトインクォーツ 2.488ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 2.488ct《Collaboration》Loose with emblem Sale price¥45,800
【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） 3.519ctルース ワッペン付

[Koshu Precious Stone Kiriko] Tinker Bell Quartz (Pink Fire Quartz) 3.519ct loose with patch Sale price¥39,800
[Koshu precious stone Kiriko plusthree] Light citrine 2.490ct loose with patch

[Koshu precious stone Kiriko plusthree] Light citrine 2.490ct loose with patch Sale price¥29,800
【甲州貴石切子】特大スモーキークォーツ 108.336ctルース《コラボ》ワッペン付

[Koshu Precious Stone Kiriko] Extra large smoky quartz 108.336ct loose "Collaboration" with emblem Sale price¥198,000
【甲州貴石切子】コロンビア産フローライト 7.240ctルース

[Koshu Precious Stone Kiriko] Fluorite from Colombia 7.240ct loose with emblem Sale price¥35,800
【甲州貴石切子】バイカラーフローライト 6.980ctルース

[Koshu Precious Stone Kiriko] Bicolor Fluorite 6.980ct Loose with Patch Sale price¥79,800
【甲州貴石切子】ストロベリークォーツ 10.023ctルース

[Koshu Precious Stone Kiriko] Strawberry Quartz 10.023ct Loose with Patch Sale price¥69,800
【甲州貴石切子】レインボースキャポライト 2.240ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko PlusThree] Brazilian Rainbow Scapolite 2.240ct Loose Akatsuki "Collaboration" with Patch Sale price¥45,800
【甲州貴石切子】ミントカラートルマリン 1.530ctルース

[Koshu Precious Stone Kiriko] Mint color tourmaline 1.530ct loose with patch Sale price¥59,800
K18PGローズクォーツ15.964ct ペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18PG Rose Quartz 15.964ct Necklace Japanese-German Appraisal Sale price¥128,000
coming soon 【甲州貴石切子】バイカラーフローライト 19.380ctルース《コラボ》ワッペン付

[Koshu Precious Stone Kiriko] Bicolor Fluorite 19.380ct Loose "Collaboration" with emblem Sale price¥39,800
Sold out 【甲州貴石切子plusthree】レピドクロサイトインクォーツ 1.973ct《コラボ》ルース ワッペン付

[Koshu precious stone Kiriko plusthree] Lepidocrocite in quartz 1.973ct《Collaboration》Loose with emblem
Sold out 【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
Sold out 【甲州貴石切子plusthree】シトリン 1.121ctルース ワッペン付

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

Sold out ローズクォーツ 8.940ctルース

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

Sold out 【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

Sold out 【甲州貴石切子】スフェーン 1.471ctルース

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

Sold out 【甲州貴石切子】アパタイト 2.310ctルース

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

Sold out 【甲州貴石切子】ロンドンブルートパーズ 10.514ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Cutting] London Blue Topaz 10.514ct {Collaboration} Loose Patch
Sold out [Koshu Precious Stones Plusthree] Peridot 0.940ct loose stone (with lily pad) patch

[Koshu Precious Stones Plusthree] Peridot 0.940ct loose stone (with lily pad) patch

Sold out 【甲州貴石切子】バイカラートルマリン 4.150ctルース ワッペン付

[Koshu Precious Stone Cut] Brazilian Bicolor Tourmaline 4.150ct Loose Patch
Sold out 【甲州貴石切子plusthree】K18PGローズクォーツ2.889 ctペンダントトップ（ネックレストップ）

[Koshu Precious Stones plusthree] K18PG Rose Quartz 2.889ct Pink Sapphire Pendant (Necklace)

Sold out デュモルチェライトインクォーツ 10.068ctルース

[Koshu Precious Stone Kiriko] Dumortierite in Quartz 10.068ct loose with emblem
Sold out [Koshu Precious Stones Plusthree] Sky Blue Topaz 4.415ct Loose

[Koshu Precious Stones Plusthree] Sky Blue Topaz 4.415ct Loose

Sold out 【甲州貴石切子plusthree】パーティカラートルマリン3.544ctルース

[Koshu precious stone Kiriko plusthree] Particolor tourmaline 3.544ct loose

Sold out 【甲州貴石切子plusthree】ロッククリスタル 15.588ct《切子玉》ルース ワッペン付

[Koshu Precious Stone Kiriko PlusThree] Rock Crystal 15.588ct《Kirikodama》 Loose with Patch

Sold out 【甲州貴石切子】メキシコ産ファイアオパール 1.318ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Fire Opal from Mexico 1.318ct《Collaboration》 Loose with emblem

Sold out 【甲州貴石切子】メキシコ産ファイアオパール 1.586ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Fire Opal from Mexico 1.586ct《Collaboration》 Loose with emblem

Sold out 【甲州貴石切子】《月型切子》アメトリン 12.681ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》Ametrine 12.681ct《Collaboration》Loose Patch

Sold out 【甲州貴石切子plusthree】デンドリティッククォーツ 17.110ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Dendritic quartz 17.110ct loose with patch

Sold out 【甲州貴石切子】バイカラーアメジスト 14.320ctルース ワッペン付

[Koshu Precious Stone Kiriko] Bicolor Amethyst 14.320ct Loose with Patch

Sold out 【甲州貴石切子】ブルートパーズ 27.540ctルース ワッペン付

[Koshu Precious Stone Kiriko] Blue Topaz 27.540ct Loose with Patch

Sold out 【甲州貴石切子】イエロースキャポライト（UVタイプ） 4.880ctルース ワッペン付

[Koshu Precious Stone Kiriko] Yellow Scapolite (UV type) 4.880ct loose with patch

Sold out 【甲州貴石切子】パープルスキャポライト 5.450ctルース ワッペン付

[Koshu Precious Stone Kiriko] Purple Scapolite 5.450ct Loose with Patch

Sold out 【甲州貴石切子】アンデシン・ラブラドライト（通称名 ブルームーンストーン） 1.970ctルース ワッペン付

[Koshu Precious Stone Kiriko] Andesine Labradorite (commonly known as Blue Moonstone) 1.970ct loose with emblem

Sold out 【甲州貴石切子plusthree】コロンビア産エメラルド 4.523ctルース《コラボ》ワッペン付

[Koshu precious stone Kiriko plusthree] Colombian emerald 4.523ct loose "Collaboration" with emblem

Sold out 【甲州貴石切子plusthree】コロンビア産エメラルド 2.729ctルース《コラボ》ワッペン付

[Koshu precious stone Kiriko plusthree] Colombian emerald 2.729ct loose "Collaboration" with emblem

Sold out 【甲州貴石切子】アイオライト 2.910ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Iolite 2.910ct《Collaboration》 Loose with emblem

Sold out 【甲州貴石切子】アンデシン・ラブラドライト（通称名 レインボームーンストーン） 2.760ctルース《6月誕生石》

[Koshu Precious Stone Kiriko] Andesine Labradorite (commonly known as Rainbow Moonstone) 2.760ct Ruth《June Birthstone》

Sold out 【甲州貴石切子】タンザナイト 2.360ctルース ワッペン付

[Koshu Precious Stone Kiriko] Tanzanite 2.360ct loose with patch

Sold out 【甲州貴石切子】ロッククリスタル 3.560ctルース ワッペン付

[Koshu Precious Stone Kiriko] Rock Crystal 3.560ct Loose with Patch

Sold out 【12531561掲載】ファイアオパール 2.810ctルース

[Koshu Precious Stone Kiriko] Fire Opal 2.810ct《Collaboration》 Loose with emblem

Sold out 【甲州貴石切子】オパール 1.20ctルース

[Koshu Precious Stone Kiriko] Opal 1.20ct loose

Sold out 【甲州貴石切子】アンデシン 0.980ctルース

[Koshu Precious Stone Kiriko] Andesine 0.980ct loose

Sold out 【甲州貴石切子】オレゴンサンストーン 2.330ctルース

[Koshu Precious Stone Kiriko] Oregon Sunstone 2.330ct Loose with Patch

Sold out 【12528276掲載】デュモルチェライト 4.275ctルース

[Koshu Precious Stone Kiriko] Dumortierite 4.275ct loose

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.