List of products eligible for patches

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【クローバーインカット】オレゴンサンストーン 7mm/1.092ct《コラボ》ルースワッペン

[Clover in cut] Oregon Sunstone 7mm/1.092ct {Collaboration} Loose patch

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【スターインカット】ライモナイトインクォーツ（オーロラクォーツ） 12mm/5.136ctルース《コラボ》ワッペン

[25.07 Campaign Scheduled] [Star in Cut] Limonite in Quartz (Aurora Quartz) 12mm/5.136ct Loose Stone [Collaboration] Patch

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【スターインカット】ティンカーベルクォーツ（ピンクファイヤークォーツ） 6mm/0.546ctルース

[25.07 Campaign Utilization Plan] [Star-in Cut] Tinkerbell Quartz (Pink Fire Quartz) 6mm/0.546ct Loose

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【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

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[Fukasawa Agate Mushroom] Agate 9.660ct loose with patch

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[Kikyou cut] Pink amethyst 5.470ct loose with patch

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[Dandelion cut] Fire opal 7mm loose with patch

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[Dandelion Cut] Fire Opal 7mm Loose with Patch

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【桔梗カット】アイリスクォーツ 31.670ct《シミズ貴石代表・清水幸雄氏》ワッペン付

[Kikyou Cut] Iris Quartz 31.670ct《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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[Kikyo Cut] Citrine 7.620ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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[Kikyo Cut] Green Quartz 6.550ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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【桔梗カット】ロッククリスタル 19.590ctルース《シミズ貴石代表・清水幸雄氏》ワッペン付

[Kikyo Cut] Rock Crystal 19.590ct Loose (Mr. Yukio Shimizu, Representative of Shimizu Precious Stones) Patch Included

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【桔梗カット】ロッククリスタル 15.750ctルース《シミズ貴石代表・清水幸雄氏》ワッペン付

[Kikyo Cut] Rock Crystal 15.750ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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[Koshu Precious Stone Kiriko] Bicolor Amethyst 14.320ct Loose with Patch

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[Koshu Precious Stone Kiriko] Blue Topaz 27.540ct Loose with Patch

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【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

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[Koshu Precious Stone Kiriko] Purple Scapolite 5.450ct Loose with Patch

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【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

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【ダンデライオンカット】グレイパープルスピネル 6mm/1.011ctルース《コラボ》日独鑑ワッペン付

(Used in July 2025 Gacha) [Dandelion Cut] Gray Purple Spinel 6mm/1.011ct Loose Stone [Collaboration] Japan-Germany Mirror with Patch

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【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

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【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

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[Koshu Precious Stone Kiriko] Iolite 2.910ct《Collaboration》 Loose with emblem

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[Dandelion cut] Tanzanite 6mm/0.933ct《Collaboration》 Loose

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【桔梗カット】アイリスクォーツ 52.440ctルース《シミズ貴石代表・清水幸雄氏》ワッペン付

[Kikyo Cut] Iris Quartz 52.440ct Loose (Mr. Yukio Shimizu, Representative of Shimizu Precious Stones) Patch Included

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【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》

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[Koshu Precious Stone Kiriko] Tanzanite 2.360ct loose with patch

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[Koshu Precious Stone Kiriko] Rock Crystal 3.560ct Loose with Patch

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【甲州貴石切子】《月型切子》ムーンストーン 3.270ctルース《6月誕生石》ワッペン

Moonstone 3.270ct loose

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【さくらインカット】ピンクトルマリン 7mmルースワッペン付 - カラッツSTORE

[Sakura in-cut] Pink tourmaline 7mm loose with patch

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【桔梗カット】ムーンストーン 16.7mm/31.720ctルース《6月誕生石》《シミズ貴石代表・清水幸雄氏》ワッペン付

[Kikyo Cut] Moonstone 16.7mm/31.720ct Loose《June Birthstone》《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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[Kikyo Cut] Rock Crystal 8.140ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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【桔梗カット】レピドクロサイトインクォーツ 18.800ctルース《シミズ貴石代表・清水幸雄氏》

[Kikyo Cut] Lepidocrocite in Quartz 18.800ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》

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【ダンデライオンカット】パープルスピネル 5.7mm/0.833ctルース《コラボ》ワッペン付

[Dandelion cut] Purple spinel 5.7mm/0.833ct loose "Collaboration" with patch

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【さくらインカット】ティンカーベルクォーツ（ピンクファイヤークォーツ） 1.01ctルース - カラッツSTORE

[Sakura Incut] Tinkerbell Quartz (Pink Fire Quartz) 1.01ct Loose

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【ダンデライオンカット】オレゴンサンストーン 8mm/1.790ctルースワッペン付

[Dandelion Cut] Oregon Sunstone 8mm/1.790ct Loose with Patch

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[Sakura Incut] Spinel 6mm loose with patch

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(Used in July 2025 Gacha) [Dandelion Cut] Purple Spinel 6mm Loose Stone "Collaboration" Patch

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【さくらインカット】スピネル 5.5mmルース《コラボ》ワッペン付 - カラッツSTORE

[Sakura Incut] Spinel 5.5mm loose "Collaboration" with patch

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(Used in July 2025 Gacha) [Dandelion Cut] Purple Spinel 6mm Loose Stone with Patch

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【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

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【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

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

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【スターインカット】オレゴンサンストーン 2.290ctルース - カラッツSTORE

[Star in cut] Oregon sunstone 2.290ct loose

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【さくらインカット】オレゴンサンストーン 2.120ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 9mm Loose with Patch

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【ダンデライオンカット】タンザナイト 1.20ctルース - カラッツSTORE

[Dandelion cut] Tanzanite 7mm/1.20ct loose with patch

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[Dandelion cut] Tanzanite 6mm loose with patch

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

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[Dandelion cut] Pink tourmaline 6mm loose (collaboration) with emblem

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.