Login

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 "

Sort by
【Sales Start 10 PM, May 17 JST】《Limited 26 Stones》Chrysoberyl Cat's Eye from Kerala, India (Neon Greenish Yellow/Mini Size) 《Bulk Purchase Discount Available》

【Sales Start 10 PM, May 17 JST】《Limited 26 Stones》Chrysoberyl Cat's Eye from Kerala, India (Neon Greenish Yellow/Mini Size) 《Bulk Purchase Discount Available》 Sale price¥1,580
スリランカ産ジルコンキャッツアイ 2.087ctルース

[Sale on June 5th at 10 PM] Sri Lankan Zircon Cat's Eye 2.087ct Loose Stone with Appraisal Sale price¥39,800
スリランカ産クリソベリルキャッツアイ 0.490ctルース

[Sale on 5/24 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.1mm/0.490ct Loose Stone Sale price¥15,800
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） 0.200ctルース

Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose Sale price¥18,800
ブラジル産グリーンベリル 0.559ctルース

[For sale on May 16th at 10 PM] Brazilian Emerald Cat's Eye 0.559ct Loose Stone with Appraisal Report Sale price¥9,800
ブラジル産エメラルドキャッツアイ0.459ctルース

[On Sale May 16th, 10 PM JST] Brazilian Emerald Cat's Eye 0.459 ct Loose Gemstone with Certificate Sale price¥9,800
ブラジル産グリーンベリル 1.022ctルース

[On Sale May 16th, 10 PM JST] Brazilian Emerald Cat's Eye 1.022ct Loose Stone with Certification Sale price¥12,800
マダガスカル産アパタイトキャッツアイ 2.800ctルース

[On sale May 24th at 10 PM] Madagascar Apatite Cat's Eye 2.800ct Loose Gemstone, Nissaiju Sale price¥29,800
スリランカ産クリソベリルキャッツアイ 0.582ctルース

[On Sale May 17th at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm/0.582ct Loose Stone Sale price¥15,800
スリランカ産クリソベリルキャッツアイ 0.507ctルース

[On sale May 15th at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm/0.507ct Loose Stone Sale price¥12,800
スリランカ産クリソベリルキャッツアイ 0.419ctルース

【On sale May 15 at 10 PM】Sri Lankan Chrysoberyl Cat's Eye 4.5mm/0.419ct 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

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

Limited to 8 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (9 x 7 mm) Multiple purchase discounts available Sale price¥4,980
Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980
スリランカ産トパーズキャッツアイ 3.384ctルース

[On sale May 2 at 10 PM JST] Sri Lankan Topaz Cat's Eye 3.384ct Loose Stone with Japan-Germany Gemological Report Sale price¥12,800
K18YG ロシア産デマントイドガーネット（ホーステール認む） 0.271ct リング

K18YG Indian Moonstone Cat's Eye 1.438ct Ring Sale price¥79,800
タンザニア産コーネルピンキャッツアイ 1.331ctルース

Tanzanian Kornerupine Cat's Eye 1.331ct Loose Stone Sale price¥5,980
タンザニア産コーネルピンキャッツアイ 0.986ctルース

Tanzanian Kornerupine Cat's Eye 0.986ct Loose Stone Sale price¥5,980
スリランカ産クリソベリルキャッツアイ 1.340ctルース

Sri Lankan Chrysoberyl Cat's Eye 1.340ct Loose Stone Sale price¥6,980
Alexandrite cat's eye from Sri Lanka 0.947ct loose

Alexandrite cat's eye from Sri Lanka 0.947ct loose Sale price¥18,800
クリソベリルキャッツアイ 0.340ctルース

Chrysoberyl cat's eye from Sri Lanka 0.340ct loose Sale price¥9,800
トルマリンキャッツアイ 0.910ctルース

Tourmaline cat's eye 0.910ct loose Sale price¥4,980
【12546151掲載】ジルコン 23.767ctルース

Sri Lankan Zircon Cat's Eye 23.767ct Loose Sale price¥398,000
Chrysoberyl cat's eye 2.553ct loose (bicolor)

Chrysoberyl cat's eye 2.553ct loose (bicolor) Sale price¥39,800
クリソベリルキャッツアイ 0.904ctルース

Chrysoberyl cat's eye 0.904ct loose Sale price¥12,800
0.447ct Loose Chrysoberyl Cat's Eye from Sri Lanka

0.447ct Loose Chrysoberyl Cat's Eye from Sri Lanka Sale price¥3,980
スリランカ産サファイアキャッツアイ 3.739ctルース

[Posted 12549094] Sri Lankan sapphire cat's eye 3.739ct loose Sale price¥59,800
コロンビア産エメラルドキャッツアイ 0.190ctルース

Colombian emerald cat's eye 0.190ct loose Sale price¥15,800
ブラジル産ブルートパーズキャッツアイ 2.631ctルース

Brazilian Blue Topaz Cat's Eye 2.631ct Loose Stone Sale price¥9,800
ピンクトルマリンキャッツアイ 3.800ctルース

Pink tourmaline cat's eye 3.800ct loose Sale price¥8,800
Limited to 4 stones: Brazilian Blue Topaz Cat's Eye Loose Stone (7.0-7.5mm) Multiple purchase discounts available

Limited to 4 stones: Brazilian Blue Topaz Cat's Eye Loose Stone (7.0-7.5mm) Multiple purchase discounts available Sale price¥5,980
トルマリンキャッツアイ 4.790ctルース

Tourmaline cat's eye 4.790ct loose Sale price¥6,980
トルマリンキャッツアイ 4.590ctルース

Tourmaline cat's eye 4.590ct loose Sale price¥12,800
タンザニア産コーネルピンキャッツアイ 0.816ctルース

Tanzanian Kornerupine Cat's Eye 0.816ct 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） 3mm/0.159ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 3mm/0.159ct loose Sale price¥18,800
トパーズキャッツアイ 8.781ctルース

Brazilian Topaz Cat's Eye 8.781ct Loose Stone Sale price¥8,800
トパーズキャッツアイ 7.869ctルース

Brazilian Topaz Cat's Eye 7.869ct Loose Stone Sale price¥8,800
アパタイトキャッツアイ 1.644ctルース

Madagascar Apatite Cat's Eye 1.644ct Loose Stone Sale price¥8,800
アパタイトキャッツアイ 2.496ctルース

Madagascar Apatite Cat's Eye 2.496ct Loose Stone Sale price¥9,800
スリランカ産サファイアキャッツアイ 2.177ctルース

Sri Lankan Cat's Eye Sapphire 2.177ct Loose Sale price¥98,000
ブラジル産ルチルキャッツアイ 3.306ctルース

Brazilian Rutile Cat's Eye 3.306ct Loose Stone (Red Rutile Quartz) Sale price¥16,800
バイカラートルマリンキャッツアイ 4.730ctルース

Brazilian Bicolor Tourmaline Cat's Eye 9.5mm/4.730ct Loose Stone Sale price¥18,800
バイカラートルマリンキャッツアイ 2.640ctルース

Brazilian bicolor tourmaline cat's eye 2.640ct loose stone Sale price¥12,800
アパタイトキャッツアイ 1.734ctルース

Madagascar Blue Apatite Cat's Eye 1.734ct Loose Stone Sale price¥15,800
クリソベリルキャッツアイ 1.497ctルース

Chrysoberyl cat's eye 1.497ct loose Sale price¥22,800
マダガスカル産ペツォッタイトキャッツアイ 0.323ctルース

Madagascar Petzotite Cat's Eye 0.323ct Loose Stone Sale price¥22,800
マダガスカル産ペツォッタイトキャッツアイ 0.393ctルース

Madagascar Petzotite Cat's Eye 0.393ct Loose Stone Sale price¥29,800
ルベライトキャッツアイ 1.484ctルース

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

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.

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.