Products on display at Yurakucho Marui

Cambodian Blue Zircon (Ratanakiri Blue) 23.12ct Loose Sale price¥498,000

Kunzite 50.260ct loose Sale price¥188,000

Pakistani bicolor sphene 3.980ct loose stone Sale price¥188,000

Bicolor pink euclase from Brazil 0.310ct loose Japanese-German edition Sale price¥128,000

【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） 5.560ctルース

[Koshu Precious Stone Cut] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.560ct Loose Patch Sale price¥55,800

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

【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] Australian Prehnite 3.090ct {Collaboration} Loose Patch Sale price¥39,800

【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

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

[Koshu Precious Stones Cut] Brazilian Rutile Quartz (Rutile-Rated Quartz) 2.270ct Loose Patch Sale price¥29,800

Rough diamond (makeable) 0.353ct loose Sale price¥25,800

White sapphire 0.418ct loose Sale price¥12,800

Zircon 0.654ct loose stone Sale price¥8,800

Aquamarine 0.940ct loose stone Sale price¥8,800

Afghanite 0.210ct loose Sale price¥6,980

Cornerpine 0.890ct rough stone Sale price¥5,980

Fluorite 1.420ct loose stone Sale price¥3,980

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Burmese peridot 10.306ct loose

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

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Pigeon blood ruby 0.950ct loose AIGS

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Burmese pigeon blood ruby 1.340ct loose GRS

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

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【12534202掲載】非加熱ブラジル産パライバトルマリン 0.110ctルース

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS

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Padparadscha sapphire 0.676ct loose medium treasure book

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Colombian Euclase 3.68ct loose

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[Kikyo Cut] Citrine 7.620ct 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] Blue Topaz 27.540ct Loose with Patch

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Padparadscha sapphire 0.603ct loose medium treasure book

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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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Alexandrite from Brazil 0.214ct Ruth Japanese German edition

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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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【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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Colombian Euclase 2.68ct loose

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

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[Koshu Precious Stone Cut] Brazilian Bicolor Tourmaline 4.150ct Loose Patch

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Sphalerite 10mm/4.795ct loose《Gemstone encyclopedia published》

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[Sakura Incut] Tanzanite 1.07ct loose with patch

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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

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[Dandelion Cut] Fire Opal 7mm 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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Bicolor Benitoite 0.172ct Loose Japanese-German Edition

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Conch pearl 0.319ct loose (with flame pattern)《June birthstone》

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[Kikyo cut] Oil-in quartz 4.010ct loose [Shimizu Precious Stone Representative Yukio Shimizu] Patch included

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.