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

[Koshu Precious Stone Cutting] Fluorite in Quartz 6.420ct Loose Stone [Collaboration] Patch
Sold out [Koshu Precious Stones Plusthree] Sri Lankan Hessonite Garnet 0.99ct Loose Color "Collaboration" Patch

[Koshu Precious Stones Plusthree] Sri Lankan Hessonite Garnet 0.99ct Loose Color "Collaboration" Patch
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 [Koshu Precious Stones plusthree] Bicolor Fluorite 5.030ct Loose Stone

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

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 【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
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】ブラジル産アメトリ ン 6.457ctルース ワッペン

[Koshu Precious Stones Plusthree] Brazilian Ametrine 6.457ct Loose Stone Patch
Sold out 【甲州貴石切子《桜切子》】ブラジル産スカイブルートパーズ 8.169ctルース ワッペン

[Koshu Precious Stone Cutting "Sakura Cutting"] Brazilian Sky Blue Topaz 8.169ct Loose Patch
Sold out ブラジル産デュモルチェライトインクォーツ 3.169ctルース

[Koshu Precious Stone Cutting] Brazilian Dumortierite in Quartz 3.169ct Loose Patch
Sold out 【甲州貴石切子】ルチルクォーツ（ルチルレイテッドクォーツ） 2.270ctルース ワッペン

[Koshu Precious Stones] Brazilian Pink Amethyst 3.71ct Loose Color "Collaboration" Patch
Sold out 【甲州貴石切子】ルチルレイテッドクォーツ 2.270ctルース ワッペン付

[Koshu Precious Stones Cut] Brazilian Rutile Quartz (Rutile-Rated Quartz) 2.270ct 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 【甲州貴石切子plusthree】アメジスト 4.306ctルース ワッペン

[Koshu Precious Stones plusthree] Amethyst 4.306ct Loose Stone Patch
Sold out 【甲州貴石切子plusthree】アメトリン 5.170ctルース ワッペン

[Koshu Precious Stones Plusthree] Ametrine 5.170ct Loose Patch
Sold out 【甲州貴石切子plusthree】メキシコ産ファイアオパール 3.056ctルース　ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 3.056ct Loose Stone [Collaboration] Patch
Sold out アメトリン 7.238ctルース

[Koshu Precious Stones plusthree] Ametrine 7.238ct loose stone with patch

Sold out [Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine)

[Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine)
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 【甲州貴石切子plus three】スイスブルートパーズ＜彩＞ 4.842ctルース

[Koshu Precious Stones Cut Plus Three] Swiss Blue Topaz 4.842ct Loose
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】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

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

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） 0.876ctルース

[Koshu Precious Stone Kiriko plusthree] Andesine Labradorite (commonly known as Rainbow Moonstone) 0.876ct loose

Sold out 【甲州貴石切子】アイオライトサンストーン 1.510ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Iolite Sunstone 1.510ct Loose

Sold out 【甲州貴石切子】オパール0.760ctルース - カラッツSTORE

[Koshu precious stone cut] Opal 0.760ct 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'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.