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oil in quartz

As the name suggests, oil-in-quartz is a gemstone with oil inside the quartz. The color of the oil is often neon yellow, but there are also colorless ones. This oil is actually petroleum, and when exposed to a black light, it fluoresces neon blue. Some of them have moving bubbles.

Karatz GemMagazine
" Oil in Quartz "

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Sold out オイルインクォーツ 1石(約1.3ct) - KARATZ STORE|カラッツSTORE
Sold out 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out オイルインクォーツ 1石(約1.8ct) - KARATZ STORE|カラッツSTORE
Sold out 《Limited to 9 stones》Oil-in-quartz from Pakistan《Moving bubble type》1 stone loose《Discount available for multiple purchases》
Sold out オイルインクォーツ 1石
Sold out オイルインクォーツ 1石(約3.8ct) - KARATZ STORE|カラッツSTORE
Sold out オイルインクォーツ 1石(約2.5ct) - KARATZ STORE|カラッツSTORE
Sold out [On sale from 10/4 at 22:00] Faceted oil in quartz from Pakistan (average: 1.30ct) {Multiple purchase discounts available}
Sold out オイルインクォーツ 1.590ctルース(気泡が動くタイプ)
Sold out パキスタン産オイルインクォーツ 0.275ctルース
Sold out [Mr. Sanjay] Pakistani Oil in Quartz 0.721ct Loose
Sold out [Mr. Sanjay] Pakistani oil-in quartz 0.446ct loose
Sold out マダガスカル産オイルインクォーツ 49.919ct原石
Sold out オイルインクォーツ 18.041ct原石
Sold out #VALUE!
Sold out パキスタン産オイルインクォーツ 1.858ct原石
Sold out パキスタン産オイルインクォーツ 2.014ct原石
Sold out パキスタン産オイルインクォーツ 1.875ct原石
Sold out パキスタン産オイルインクォーツ 1.512ct原石
Sold out パキスタン産オイルインクォーツ 1.070ct原石(気泡が動くタイプ)
Sold out パキスタン産オイルインクォーツ 1.669ct原石(気泡が動くタイプ)
Sold out パキスタン産オイルインクォーツ 2.337ct原石(気泡が動くタイプ)
Sold out パキスタン産オイルインクォーツ 1.229ct原石(気泡が動くタイプ)
Sold out パキスタン産オイルインクォーツ 1.00ct原石(気泡が動くタイプ)

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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.
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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.