Login
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 "

Sort by
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

Sold out 【甲州貴石切子】ムーンストーン 3.400ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Moonstone 3.400ct loose

Sold out 【甲州貴石切子】K18グリーンクォーツ4.592ct ペンダント（2wayタイプ） - カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Green Quartz 4.592ct Pendant (2way type) with patch

Sold out 【甲州貴石切子】フローライトインクォーツ 4.550ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Fluorite in Quartz 4.550ct Loose

Sold out 【甲州貴石切子】アメトリン 3.400ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Ametrine 3.400ct loose

Sold out 【甲州貴石切子】タンザナイト 1.740ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Tanzanite 1.740ct loose

Sold out 【甲州貴石切子】アルマンディンガーネット 2.950ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Almandine Garnet 2.950ct Loose with Patch

Sold out [Koshu Precious Stone Kiriko] Bicolor Amethyst 3.530ct Loose Color with Patch

[Koshu Precious Stone Kiriko] Bicolor Amethyst 3.530ct Loose Color with Patch

Sold out 【甲州貴石切子】シトリン 3.850ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Citrine 3.850ct loose

Sold out 【甲州貴石切子】レモンクォーツ 3.890ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Lemon Quartz 3.890ct Loose

Sold out [Koshu Precious Stone Kiriko plusthree] Tinkerbell Quartz 5.190ct Loose (Pink Fire Quartz) Aya "Collaboration" Patch included

[Koshu Precious Stone Kiriko plusthree] Tinkerbell Quartz 5.190ct Loose (Pink Fire Quartz) Aya "Collaboration" Patch included

Sold out 【甲州貴石切子】ピンクジルコン 1.480ctルース - カラッツSTORE

[Koshu precious stone Kiriko plusthree] Pink zircon 1.480ct loose Subaru "Collaboration" with patch

Sold out 【甲州貴石切子】オパール 4.140ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Opal 4.140ct loose

Sold out 【甲州貴石切子】アベンチュリンアクアマリン 1.900ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Aventurine Aquamarine 1.900ct Loose

Sold out 【甲州貴石切子】レピドクロサイトインクォーツ 1.590ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 1.590ct Loose

Sold out 【甲州貴石切子】ローズアメジスト 3.040ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Rose Amethyst 3.04ct Loose Subaru Sakura Kiriko

Sold out [Koshu Precious Stone Kiriko] Rose Quartz 3.040ct Loose Subaru Sakura Kiriko with Patch

[Koshu Precious Stone Kiriko] Rose Quartz 3.040ct Loose Subaru Sakura Kiriko with Patch

Sold out 【甲州貴石切子】グリーンアメジスト（プラシオライト） 3.340ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Green Amethyst (prasiolite) 3.340ct loose

Sold out 【甲州貴石切子】ロードライトガーネット 1.590ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Rhodolite Garnet 1.590ct Loose with Patch

Sold out 【甲州貴石切子】ブルージルコン 2.04ctルース - カラッツSTORE

[Koshu precious stone Kiriko plusthree] Blue zircon 2.04ct loose "Collaboration" with emblem

Sold out 【甲州貴石切子】ロードライトガーネット 3.77ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Rhodolite Garnet 3.77ct Loose

Sold out 【甲州貴石切子】オレゴンサンストーン 2.350ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Oregon Sunstone 2.350ct Loose

Sold out 【甲州貴石切子】バイカラーアメジスト 2.390ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Bicolor Amethyst 2.390ct Loose

Sold out [Koshu Precious Stone Kiriko] Dumortierite in Quartz 3.870ct Loose Subaru "Collaboration" with emblem

[Koshu Precious Stone Kiriko] Dumortierite in Quartz 3.870ct Loose Subaru "Collaboration" with emblem

Sold out 【甲州貴石切子】K18アメトリン4.7190ct ペンダント（ネックレス）日独鑑付 - カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Ametrine 4.7190ct Pendant (Necklace) Japanese-German Appraisal

Sold out 【甲州貴石切子】バイカラーフローライト 2.900ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Bicolor Fluorite 2.900ct Loose

Sold out 【甲州貴石切子】オレゴンサンストーン 1.99ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Oregon Sunstone 1.99ct Loose

Sold out [Koshu Precious Stone Kiriko] Rubellite 2.38ct loose with patch

[Koshu Precious Stone Kiriko] Rubellite 2.38ct loose with patch

Sold out [Koshu Precious Stone Kiriko] Opal 2.080ct loose

[Koshu Precious Stone Kiriko] Opal 2.080ct loose

Sold out 【甲州貴石切子】オパール 1.830ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Opal 1.830ct loose with Sakura Kiriko emblem

Sold out 【甲州貴石切子】レピドクロサイトインクォーツ 9.250ctルース（通称名：スーパーセブン） - カラッツSTORE

[Koshu precious stone cut glass] Lepidocrocite in quartz 9.250ct loose (common name: Super Seven)

Sold out 【甲州貴石切子】Pt900アメトリン4.793ct ペンダントトップ（ネックレストップ） - カラッツSTORE

[Koshu Precious Stone Kiriko] Pt900 Ametrine 4.793ct Pendant Top (Necklace Top)

Sold out [Koshu Precious Stone Kiriko] Oregon Sunstone 4.60ct Loose

[Koshu Precious Stone Kiriko] Oregon Sunstone 4.60ct Loose

Sold out 【甲州貴石切子】デュモルチェライトインクォーツ - カラッツSTORE

[Koshu Precious Stone Kiriko] Dumortierite in Quartz

Sold out 【セミオーダー代込】甲州貴石切子のアイオライトサンストーンリング - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] Iolite Sunstone 1.310ct Loose

Sold out 【甲州貴石切子】スフェーン 2.060ct - カラッツSTORE

[Koshu Precious Stone Kiriko] Sphene 2.060ct

Sold out Pt950アクアマリン2.67ct リング（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] Pt950 Aquamarine 2.67ct Ring

Sold out K18レモンクォーツ16.465ct・ダイヤモンドペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Lemon Quartz 16.465ct Pendant Japanese-German Appraisal

Sold out K18レモンクォーツ9.791ct ・ダイヤモンドペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Lemon Quartz 9.791ct ・Diamond Pendant Top

Sold out Pt950アクアマリン1.60ct リング（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] Pt950 Aquamarine 1.60ct Ring

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.