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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】プレーナイト 3.090ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Cutting] Australian Prehnite 3.090ct {Collaboration} Loose Patch Sale price¥39,800
[Koshu Precious Stone Cut] Scololite 5.350ct Loose Stone Patch

[Koshu Precious Stone Cut] Scololite 5.350ct Loose Stone Patch Sale price¥39,800
【甲州貴石切子plusthree】ブラジル産アメトリ ン 6.557ctルース ワッペン

[Koshu Precious Stones Plusthree] Brazilian Ametrine 6.557ct Loose Stone Patch Sale price¥55,800
【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 Sale price¥55,800
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 Sale price¥55,800
【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） 12.860ctルース《コラボ》 ワッペン

[Koshu Precious Stones Cut] Brazilian Rutile Quartz (Rutile-Rated Quartz) 12.860ct Loose Stone [Collaboration] Patch Sale price¥59,800
【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 Sale price¥29,800
【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 Sale price¥25,800
【甲州貴石切子pluethree】イエローベリル 0.880ctルース

[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose Sale price¥29,800
【甲州貴石切子plusthree】ロッククリスタル 15mm/10.059ctルース《昴×灯》(ダブル切子タイプ) ワッペン

[Koshu Precious Stone Cut Plusthree] Rock Crystal 15mm/10.059ct Loose Stone "Subaru x Hikaru" (Double Cut Type) Patch Sale price¥45,800
【甲州貴石切子】スコロライト 6.039ctルース ワッペン

[Koshu Precious Stone Cut] Scololite 6.039ct Loose Stone Patch Sale price¥69,800
【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 Sale price¥45,800
【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》 ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥59,800
アメトリン 7.238ctルース

[Koshu Precious Stones plusthree] Ametrine 7.238ct loose stone with patch Sale price¥39,800
シトリン 5.121ctルース

[Koshu Precious Stones plusthree] Citrine 5.121ct Loose Sale price¥39,800
[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) Sale price¥39,800
ラベンダークォーツ（スコロライト） 1.761ctルース

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone Sale price¥39,800
【甲州貴石切子plusthree】グリーンクォーツ 6mm/0.714ctルース ワッペン付

[Koshu Precious Stones Plusthree] Green Quartz 6mm/0.714ct Loose Stone with Patch Sale price¥25,800
コロンビア産エメラルド 2.018ctルース

[Koshu precious stone cutter pluethree] Colombian emerald 2.018ct loose Sale price¥98,000
グリーンクォーツ 0.743ctルース

[Koshu Precious Stones plusthree] Green Quartz 6mm/0.743ct Loose with Patch Sale price¥25,800
【甲州貴石切子plusthree】ダルメシアンクォーツ 70.155ctルース《コラボ》 ワッペン付

[Koshu precious stone Kiriko plusthree] Dalmatian quartz 70.155ct loose "Collaboration" with patch Sale price¥59,800
【甲州貴石切子plusthree】モルダバイト 1.511ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Moldavite 1.511ct loose with patch Sale price¥39,800
スモーキークォーツ 0.691ctルース

[Koshu precious stone Kiriko plusthree] Smoky quartz 6mm/0.691ct loose with patch Sale price¥25,800
スイスブルートパーズ 26.821ctルース

[Koshu precious stone Kiriko plusthree] Swiss blue topaz 26.821ct loose Sale price¥59,800
【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 Sale price¥29,800
【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
Sold out [Sales Start November 2nd at 10 PM] Win an 8.16ct Sky Blue Topaz from Koshu Kiriko (Sakura Kiriko) and more in the November Birthstone Topaz Lottery! 💎 {Multiple Purchase Discounts Available}

[Sales Start November 2nd at 10 PM] Win an 8.16ct Sky Blue Topaz from Koshu Kiriko (Sakura Kiriko) and more in the November Birthstone Topaz Lottery! 💎 {Multiple Purchase Discounts Available}
Sold out [On Sale November 1st at 10 PM] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut (Multiple Purchase Discounts Available)

[On Sale November 1st at 10 PM] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut (Multiple Purchase Discounts Available)
Sold out [On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)

[On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)
Sold out Limited to 20 stones! Koshu Kiriko Plus Three: Includes two carefully cut Oregon Sunstones. Includes one loose stone. Discounts available for multiple purchases.

Limited to 20 stones! Koshu Kiriko Plus Three: Includes two carefully cut Oregon Sunstones. Includes one loose stone. Discounts available for multiple purchases.
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 【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 【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】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】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】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)

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.