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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】フローライト 3.280ctルース

[Koshu Precious Stone Cut] Green Fluorite 10mm/3.280ct Loose Stone [Collaboration] Patch Sale price¥29,800
【甲州貴石切子】ティンカーベルクォーツ3.790ctルース

[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz 3.790ct Loose Stone [Collaboration] Patch Sale price¥35,800
【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） 5.540ctルース

[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.540ct Loose Stone [Collaboration] Patch Sale price¥39,800
[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 Sale price¥45,800
[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 Sale price¥25,800
【甲州貴石切子】バイカラーフローライト 5.030ctルース - カラッツSTORE

[Koshu Precious Stones plusthree] Bicolor Fluorite 5.030ct Loose Patch Sale price¥29,800
【甲州貴石切子】スキャポライト 2.01ctルース ワッペン付

[Koshu Precious Stone Cut] Purple Scapolite from Tanzania 2.01ct Loose Patch Sale price¥45,800
[Koshu Precious Stone Cut] Bicolor Fluorite 20.850ct Loose Stone [Collaboration] Patch

[Koshu Precious Stone Cut] Bicolor Fluorite 20.850ct Loose Stone [Collaboration] Patch Sale price¥49,800
【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】オレゴンサンストーン 2.610ct《コラボ》ルース ワッペン付

[Koshu Precious Stones Cut Plusthree] Oregon Sunstone from America 2.610ct [Collaboration] Loose Patch Sale price¥39,800
【甲州貴石切子plusthree】オレゴンサンストーン 2.670ctルース《コラボ》 す。宝石鑑定士が運営しています。

[Koshu Precious Stones Cut Plusthree] 2.670ct Oregon Sunstone Loose Stone from America [Collaboration] 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
【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 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】アフガニスタン産クンツァイト 4.630ctルース《コラボ》 ワッペン

[Koshu Precious Stone Cutting] Afghanistan Kunzite 4.630ct Loose Stone [Collaboration] Patch Sale price¥49,800
【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） 2.270ctルース ワッペン

[Koshu Precious Stones] Brazilian Pink Amethyst 3.71ct Loose Color "Collaboration" Patch Sale price¥39,800
【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】アフガニスタン産クンツァイト 7.040ctルース《コラボ》ワッペン

[Koshu Precious Stone Cutting] Afghanistan Kunzite 7.040ct Loose Stone [Collaboration] Patch Sale price¥49,800
【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
【甲州貴石切子plusthree】スイスブルートパーズ 21.690ctルース《コラボ》ワッペン

[Koshu Precious Stones plusthree] Swiss Blue Topaz 21.690ct Loose Stone [Collaboration] Patch Sale price¥69,800
【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 Sale price¥69,800
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】スカイブルートパーズ 6mm/0.988ctルース ワッペン付

[Koshu Precious Stones Plusthree] Sky Blue Topaz 6mm/0.988ct Loose Stone with Patch Sale price¥25,800
【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
【12546889掲載】スイスブルートパーズ 4.529ctルース

[Koshu Precious Stone Kiriko plusthree] Swiss Blue Topaz <Akatsuki> 4.529ct loose Sale price¥35,800
【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 stone Kiriko plus three] Swiss blue topaz <Aya> 4.842ct loose Sale price¥35,800
ルベライト 1.809ctルース

[Koshu precious stone Kiriko plusthree] Rubellite 1.809ct loose Sale price¥39,800
グリーントルマリン 1.880ctルース

[Koshu precious stone Kiriko plusthree] Green tourmaline 1.880ct loose Sale price¥35,800
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】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 Sale price¥98,000
【甲州貴石切子】《月型切子》シトリン 6.097ct《コラボ》ルース ワッペン付

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》Citrine 6.097ct《Collaboration》With loose patch Sale price¥69,800

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.