Gemstones that exhibit a cat's eye effect

When exposed to light, a cat's eye gemstone reveals a single ray of light in the middle, just like a cat's eye. This phenomenon is called chatoyancy or cat's eye effect, and is said to be caused by the inclusion of tube-shaped inclusions inside. It is often cut into a dome-shaped cabochon to make the cat's eye effect more visible.

Karatz GemMagazine
" Cat's Eye Jewel "

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Alexandrite Cat's Eye 0.831ct Loose DGL Appraisal

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Tourmaline cat's eye 1.090ct loose

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Tourmaline cat's eye 0.870ct loose

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【11523286掲載】ロシア産デマントイドガーネット（ホーステール認む） 0.147ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.147ct loose

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Russian demantoid garnet cat's eye (horsetail recognized) 0.138ct loose

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Alexandrite cat's eye 0.170ct loose

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Alexandrite cat's eye 0.126ct loose

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Russian demantoid garnet cat's eye 0.128ct loose

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Emerald cat's eye 0.255ct loose

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【12522354掲載】ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.155ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.155ct loose

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【12522351掲載】ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.136ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.136ct loose

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【12521760掲載】ブラッドショットアイオライトサンストーンキャッツアイ 3.020ctルース

Bloodshot Iolite Sunstone Cat's Eye 3.020ct Loose

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【12521400掲載】ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.112ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.112ct loose

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ペツォッタイトキャッツアイ 0.283ctルース - KARATZ STORE｜カラッツSTORE

Pezzotto cat's eye 0.283ct loose

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ペツォッタイトキャッツアイ 0.566ctルース - KARATZ STORE｜カラッツSTORE

Pezzotite Cat's Eye 0.566ct Loose

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アパタイトキャッツアイ 1.049ctルース - KARATZ STORE｜カラッツSTORE

Apatite cat's eye 1.049ct loose

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アレキサンドライトキャッツアイ 1.389ctルース - KARATZ STORE｜カラッツSTORE

Alexandrite cat's eye 1.389ct loose

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エメラルドキャッツアイ 0.604ctルース - KARATZ STORE｜カラッツSTORE

Emerald cat's eye 0.604ct loose

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[On sale at 10pm on 10/16] Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 2.9mm/0.156ct Loose Stone

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ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.610ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 2mm/0.061ct loose

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Indian Alexandrite Cat's Eye 0.346ct Loose Stone

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Sri Lankan Chrysoberyl Cat's Eye 1.164ct Loose Stone

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Indian Alexandrite Cat's Eye 0.265ct Loose Stone

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K18デマントイドガーネットキャッツアイ（ホーステール認む）0.052ct ペンダントトップ（ネックレストップ）

K18 Russian Demantoid Garnet Cat's Eye (Horsetail) 0.052ct Pendant (Necklace)

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Parasitic Peridot Cat's Eye 0.814ct Loose Stone (Parasitic Peridot Cat's Eye)

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Indian Alexandrite Cat's Eye 0.225ct Loose Stone

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Indian Alexandrite Cat's Eye 0.229ct Loose Stone

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Brazilian alexandrite cat's eye (Hemachita mine) 0.496ct loose

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Indian alexandrite cat's eye 0.246ct loose

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Chrysoberyl cat's eye 0.171ct loose

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Chrysoberyl cat's eye 0.231ct loose

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Chrysoberyl cat's eye 0.543ct loose

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Chrysoberyl cat's eye 1.892ct loose

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Alexandrite cat's eye from Sri Lanka 0.827ct loose Japanese-German edition

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Alexandrite cat's eye from Sri Lanka 0.791ct loose Japanese-German edition

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Alexandrite cat's eye 0.173ct loose

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Alexandrite cat's eye 0.189ct loose

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Chrysoberyl cat's eye from Sri Lanka 2.307ct loose

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Chrysoberyl cat's eye from Sri Lanka 0.660ct loose

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Chrysoberyl cat's eye 0.676ct loose

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Indigolite tourmaline 3.613ct loose (cat's eye) Japanese and German

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Aventurine Aquamarine Cat's Eye 1.524ct Loose

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Russian demantoid garnet cat's eye (horsetail recognized) 0.231ct loose

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Aquamarine cat's eye 4.010ct loose

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Aventurine Aquamarine Cat's Eye 2.086ct Loose

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【5/21 22時販売】ブラジル産パライバトルマリンキャッツアイ 0.326ctルース（ CuO:0.3%,MnO:4.2%） - カラッツSTORE

Brazilian Paraiba tourmaline cat's eye 0.326ct loose (CuO:0.3%,MnO:4.2%)

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【KEN氏】ヘリオドールキャッツアイ 1.250ctルース - カラッツSTORE

[Mr. KEN] Heliodor Cat's Eye 1.250ct Loose

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ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 1.160ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 1.160ct 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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

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