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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 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available
Sold out Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]
Sold out パキスタン産オイルインクォーツ 0.325ctルース
Sold out パキスタン産オイルインクォーツ 0.361ctルース
Sold out パキスタン産オイルインクォーツ 0.353ctルース
Sold out パキスタン産オイルインクォーツ 0.442ctルース
Sold out Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)
Sold out Pakistani Oil in Quartz 0.235ct Loose Stone
Sold out パキスタン産オイルインクォーツ 0.629ct原石(双子・気泡が動くタイプ)
Sold out 【桔梗カット】オイルインクォーツ 4.010ctルース - カラッツSTORE
Sold out マダガスカル産オイルインクォーツ1石ルース(近年発見の新しい産地,平均28ct)《複数購入割引有》
Sold out 【桔梗カット】オイルインクォーツ 20.940ctルース(虹入) - カラッツSTORE
Sold out Pakistani oil-in quartz 0.595ct loose
Sold out パキスタン産オイルインクォーツ 0.427ctルース

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.