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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 [Available at 10 PM on January 3rd] Limited to 13 stones: Beryl Gacha (including Koshu Kiriko Aquamarine Vortex Cut) 1 loose stone [Multiple purchase discounts available]

[Available at 10 PM on January 3rd] Limited to 13 stones: Beryl Gacha (including Koshu Kiriko Aquamarine Vortex Cut) 1 loose stone [Multiple purchase discounts available]
Sold out 【甲州貴石切子plusthree】パイライトインクォーツ 12.164ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Pyrite in quartz 12.164ct loose with patch
Sold out 【甲州貴石切子】モルガナイト 14.931ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Morganite 14.931ct《Collaboration》Loose with emblem
Sold out November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)

November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)
Sold out Garnet Gacha Loose Stone with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)

Garnet Gacha Loose Stone with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)
Sold out [Koshu Precious Stones plusthree] "Cut Rose Quartz" 13.682ct Loose Stone

[Koshu Precious Stones plusthree] "Cut Rose Quartz" 13.682ct Loose Stone

Sold out ガーネット 0.979ctルース

[Posted in 12548908] Garnet 0.979ct loose
Sold out Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.

Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.
Sold out 【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
Sold out [Koshu precious stone Kiriko plusthree] Light citrine 2.490ct loose with patch

[Koshu precious stone Kiriko plusthree] Light citrine 2.490ct loose with patch
Sold out Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) (Multiple purchase discounts available)

Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) (Multiple purchase discounts available)

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】トルマリンインクォーツ 2.484ct《コラボ》ルース《昴》 ワッペン付

[Koshu precious stone Kiriko plusthree] Tourmaline in quartz 2.484ct《Collaboration》Ruth《Subaru》 Patch included

Sold out 【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
Sold out 【甲州貴石切子】クンツァイト 5.024ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Kunzite 5.024ct《Collaboration》Loose with emblem
Sold out 【甲州貴石切子】《月型切子》】ブルートパーズ 33.591ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》]Blue Topaz 33.591ct《Collaboration》Loose with emblem
Sold out 【甲州貴石切子plusthree】ローズクォーツ 6.330ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Rose quartz 6.330ct loose with patch
Sold out 【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
Sold out 【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
Sold out 【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） 8.229ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Limonite in Quartz (Aurora Quartz) 8.229ct《Collaboration》 Loose with emblem
Sold out 【甲州貴石切子】アメトリン 8.964ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko] Ametrine 8.964ct《Collaboration》Loose with emblem
Sold out 【甲州貴石切子plusthree】トルマリンインクォーツ 2.652ct《コラボ》ルース ワッペン付

[Koshu Precious Stones Plusthree] Brazilian Tourmaline in Quartz 2.652ct Loose Stone
Sold out 【甲州貴石切子plusthree】アイオライトサンストーン 1.163ct《コラボ》ルース 《灯》 ワッペン付

[Koshu Precious Stones Plusthree] Madagascar Iolite Sunstone 1.163ct Loose Stone
Sold out 【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
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】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
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】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
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】アパタイト 1.990ctルース

[Koshu Precious Stones plusthree] Madagascar Apatite 1.990ct 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 [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 [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《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 アメトリン 7.238ctルース

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

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

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.