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 "

【6/23 22時販売】マダガスカル産アパタイトキャッツアイ 1.644ctルース Sale price¥8,800

【6/24 22時販売】マダガスカル産アパタイトキャッツアイ 2.496ctルース Sale price¥9,800

【6/24 22時販売】マダガスカル産アパタイトキャッツアイ 0.909ctルース Sale price¥6,980

[On sale at 22:00 on 6/18] Colombian emerald cat's eye 0.084ct loose stone Sale price¥6,980

[On sale 6/7 at 22:00] Indonesian Parasitic Peridot Cat's Eye 0.797ct Loose Stone Sale price¥268,000

[On sale 6/7 at 22:00] Sri Lankan Cat's Eye Sapphire 2.177ct Loose Sale price¥98,000

【KEN氏】トルマリンキャッツアイ 0.810ctルース - カラッツSTORE

[On sale 6/1 at 22:00] Brazilian tourmaline cat's eye 0.810ct loose stone Sale price¥2,980

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

[On sale from 10pm on 5/11] Limited to 7 stones! Special May birthstone project💎 1 loose Colombian emerald cat's eye (highly transparent cat's eye) [Multiple purchase discounts available] Sale price¥7,980

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

[On sale from 10pm on 5/24] Brazilian cat's eye emerald 4.070ct loose stone Sale price¥198,000

[On sale from 10pm on 5/18] Brazilian Green Tourmaline Cat's Eye 5.210ct Loose Sale price¥25,800

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） 2.8mm/0.188ctルース

[On sale from 10pm on 5/18] Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 2.8mm/0.188ct Loose Stone Sale price¥25,800

[On sale at 22:00 on 6/5] Brazilian rutilated cat's eye 3.856ct loose stone (red rutilated quartz) Sale price¥18,800

[On sale at 22:00 on 6/5] Brazilian rutilated cat's eye 3.306ct loose stone (red rutilated quartz) Sale price¥16,800

[On sale from 10pm on 5/21] Colombian emerald cat's eye 0.421ct loose stone Sale price¥12,800

[On sale from 10pm on 5/21] Colombian emerald cat's eye 0.217ct loose stone Sale price¥9,800

[On sale from 10pm on 5/17] Colombian cat's eye emerald 3.6mm/0.179ct loose stone Sale price¥8,800

[On sale from 10pm on 5/14] Brazilian bicolor tourmaline cat's eye 9.5mm/4.730ct loose stone Sale price¥18,800

[On sale from 10pm on 5/9] Brazilian bicolor tourmaline cat's eye 2.640ct loose stone Sale price¥12,800

[On sale from 10pm on 5/9] Colombian emerald cat's eye 0.108ct loose stone Sale price¥8,800

[On sale 4/26 at 10pm] Colombian emerald cat's eye 0.083ct loose stone Sale price¥6,980

[On sale 4/26 at 10pm] Colombian emerald cat's eye 0.078ct loose stone Sale price¥6,980

[On sale from 10pm on 4/20] Madagascar Apatite Cat's Eye 2.80ct Loose Sale price¥29,800

[On sale at 10pm on 4/20] Madagascar Blue Apatite Cat's Eye 1.734ct Loose Stone Sale price¥15,800

Madagascar Petzotite Cat's Eye 0.323ct Loose Stone Sale price¥22,800

Madagascar Petzotite Cat's Eye 0.393ct Loose Stone Sale price¥29,800

Indian Alexandrite Cat's Eye 0.643ct Loose Stone Sale price¥18,800

Brazilian cat's eye emerald 6.080ct loose stone, Japan-Germany exchange Sale price¥298,000

Brazilian Chrysoberyl Cat's Eye 1.356ct Loose Stone Sale price¥6,980

Brazilian Rubellite Cat's Eye 1.484ct Loose Stone Sale price¥39,800

Brazilian Alexandrite Cat's Eye 3.3mm/0.219ct Loose Stone (Hemachita Mine) Sale price¥32,800

Brazilian Alexandrite Cat's Eye 3.3mm/0.219ct Loose Stone (Hemachita Mine) Sale price¥35,800

Brazilian Alexandrite Cat's Eye 3.3mm/0.260ct Loose Stone (Hemachita Mine) Sale price¥39,800

Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone Sale price¥5,980

Sri Lankan Chrysoberyl Cat's Eye 0.519ct Loose Stone Sale price¥8,800

Indian Alexandrite Cat's Eye 0.787ct Loose Stone Sale price¥25,800

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

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

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）

Pt900/K18 Australian Black Opal Cat's Eye 0.736ct Diamond Pendant (Necklace) Chuho Sale price¥258,000

K18YG Sri Lankan chrysoberyl cat's eye 0.69ct chrysoprase ring Sale price¥79,800

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

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

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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