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 "

【11/18 22時販売】スリランカ産クリソベリルキャッツアイ 5.0mm/0.972ctルース Sale price¥9,800

[11/12 22:00 Sale] Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone Sale price¥5,980

《Yurakucho Marui 2024112 Carry-out》【11/7 22:00 Sale】Indian Alexandrite Cat's Eye 0.621ct Loose Stone Sale price¥18,800

[On sale at 10pm on 10/26] Sri Lankan chrysoberyl cat's eye 0.519ct loose stone Sale price¥8,800

コロンビア産エメラルドキャッツアイ1石ルース（平均0.35ct)《初めての方向け》

Colombian emerald cat's eye 1 stone loose (average 0.35ct)《For first-time users》《Multiple purchase discount available》 Sale price¥12,800

《Yurakucho Marui 2024112 Carry-out》【10/24 22:00 Sale】Indian Alexandrite Cat's Eye 0.787ct Loose Stone Sale price¥25,800

《Yurakucho Marui 2024112 Takeout》【10/22 22:00 Sale】Indian Alexandrite Cat's Eye 0.228ct Loose Sale price¥8,800

【KEN氏】トルマリンキャッツアイ 0.890ctルース - カラッツSTORE

[On sale at 10pm on 10/16] Brazilian tourmaline cat's eye 0.890ct loose stone Sale price¥2,980

【KEN氏】トルマリンキャッツアイ 0.910ctルース - カラッツSTORE

Brazilian tourmaline cat's eye 0.910ct loose stone Sale price¥3,980

《Yurakucho Marui 2024112 Takeout》【10/12 22:00 Sale】Brazilian Chrysoberyl Cat's Eye 1.242ct Loose Stone Sale price¥7,980

[On sale 10/13 at 22:00] Brazilian bicolor tourmaline cat's eye 22.056ct loose stone Sale price¥198,000

Pt900/K18ブラックオパールキャッツアイ0.736 ペンダント（ネックレス）

[On sale at 10pm on 13/10] Pt900/K18 Australian black opal cat's eye 0.736ct diamond pendant (necklace) by Chuho Sale price¥258,000

《Yurakucho Marui 2024112 Takeout》K18YG Sri Lankan chrysoberyl cat's eye 0.69ct chrysoprase ring Sale price¥79,800

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980

Colombian emerald cat's eye 0.690ct loose stone Sale price¥39,800

Brazilian Rubellite Cat's Eye 1.180ct Loose Stone Sale price¥29,800

Indian Alexandrite Cat's Eye 0.255ct Loose Stone Sale price¥8,800

Indian Alexandrite Cat's Eye 0.528ct Loose Stone Sale price¥15,800

Limited to 9 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (8 x 6 mm) Multiple purchase discounts available Sale price¥3,980

Limited to 8 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (9 x 7 mm) Multiple purchase discounts available Sale price¥4,980

Tanzanian Kornerupine Cat's Eye 0.622ct Loose Stone Sale price¥4,980

Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone Sale price¥6,980

Sri Lankan Chrysoberyl Cat's Eye 1.074ct Loose Stone Sale price¥5,980

Sri Lankan Chrysoberyl Cat's Eye 1.355ct Loose Stone Sale price¥6,980

Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone Sale price¥6,980

Indian Alexandrite Cat's Eye 0.206ct Loose Stone Sale price¥6,980

[12552038] Beryl Cat's Eye 32.703ct Loose Stone Sale price¥98,000

《Yurakucho Marui 2024112 takeout》Sri Lankan chrysoberyl cat's eye 1.169ct loose stone Sale price¥28,800

Sri Lankan Chrysoberyl Cat's Eye 0.531ct Loose Stone Sale price¥19,800

Sri Lankan Chrysoberyl Cat's Eye 0.556ct Loose Stone Sale price¥15,800

Indian Alexandrite Cat's Eye 0.270ct Loose Stone Sale price¥9,800

Colombian emerald cat's eye 0.138ct loose Sale price¥17,800

《Yurakucho Marui 2024112 takeout》Indian Alexandrite Cat's Eye 0.186ct Loose Stone Sale price¥6,980

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） 0.200ctルース

Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose Sale price¥29,800

Chrysoberyl cat's eye 1.088ct loose stone Sale price¥8,800

《Yurakucho Marui 2024112 takeout》Sri Lankan chrysoberyl cat's eye 4mm/0.465ct loose stone Sale price¥5,980

Chrysoberyl cat's eye 1.156ct loose stone Sale price¥18,800

Chrysoberyl cat's eye 1.105ct loose stone Sale price¥7,980

Chrysoberyl Cat's Eye 0.371ct Loose Stone Sale price¥6,980

Chrysoberyl cat's eye 0.495ct loose stone Sale price¥8,800

Limited to 4 stones, Defective, Chrysoberyl Cat's Eye, 1 stone loose, Multiple purchase discount available Sale price¥3,980

Indian Alexandrite Cat's Eye 0.373ct Loose Stone Sale price¥8,800

Tanzanian Kornerupine Cat's Eye 1.331ct Loose Stone Sale price¥7,980

Tanzanian Kornerupine Cat's Eye 0.986ct Loose Stone Sale price¥6,980

Tanzanian Kornerupine Cat's Eye 0.866ct Loose Stone Sale price¥5,980

Tanzanian Kornerupine Cat's Eye 0.725ct Loose Stone Sale price¥4,980

Tanzanian Kornerupine Cat's Eye 1.252ct Loose Stone Sale price¥6,980

Tanzanian Kornerupine Cat's Eye 1.539ct Loose Stone Sale price¥9,800

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.

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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