Quartz (''Mango'' Quartz) with Halloysite inclusions

Cabiche, Quípama Mun., Boyacá Dept., Colombia
Small Cabinet, 6.9 x 4.2 x 3.2 cm
Start Time: 01/18/2024 8:00:00 pm (CST)
End Time: 01/25/2024 6:45:00 pm (CST)
Auction Closed
Winning Bid: $415

Item Description

Quartz is a plentiful and varied mineral species that occurs in a wide range of habits/styles and colors. It commonly is a host for other mineral inclusions, creating unique specimens. This piece is a lovely example of these fairly new attractive Quartz specimens which are commonly referred to as "Mango Quartz". We first started seeing them on the market in 2017. Due to their wonderfully singular color, along with excellent crystallization, they were very well-received, and instantly regarded as some of the most distinctive Quartz crystals ever found. This distinguishing soft yellow-orange color is what obviously inspired the "Mango Quartz" nickname. Typically, Colombia isn't a big Quartz crystal producing country, and these crystals were actually mined along a roadcut in the middle of the famous Emerald mining region in Boyacá. The upper portions of most of these crystals feature bright yellow-orange inclusions of a mineral that was first reported to be Humboltine, but others have since stated it is Halloysite. The Quartz crystals are high quality in their own right, as they are textbook, hexagonal prisms with good luster, sharpness and fine internal gemminess, which is only accentuated by the beautiful inclusions. This piece is a lovely crystal group featuring a pair of sharp, lustrous, prismatic crystals with colorless, gem clarity at the base, and of course those eye-catching yellow inclusions on the terminations, free of matrix. The largest crystal measures 5.7 cm. I don't know if there will be more of these in the future, so if you're a fan of interesting Quartz specimens or unique inclusion specimens, don't pass this one up, as there are not nearly as many as there were a few years ago. For more information, please see Rocks & Minerals May/June 2019 issue, Vol. 94, No. 3.

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Bidding History

Bid Amount Bid Time
$415 01/25/2024 6:28:38 pm (CST)
$405 01/25/2024 6:28:37 pm (CST)
$365 01/23/2024 6:30:56 pm (CST)
$355 01/23/2024 6:30:56 pm (CST)
$315 01/23/2024 6:30:24 pm (CST)
$305 01/23/2024 6:30:24 pm (CST)
$265 01/23/2024 6:29:58 pm (CST)
$255 01/23/2024 6:29:58 pm (CST)
$175 01/22/2024 9:41:22 pm (CST)
$165 01/22/2024 2:51:02 pm (CST)
$155 * 01/22/2024 2:50:50 pm (CST)
$155 * 01/22/2024 2:50:49 pm (CST)
$43 01/21/2024 11:56:55 pm (CST)
$41 01/21/2024 11:56:55 pm (CST)
$38 01/21/2024 9:15:36 am (CST)
$33 01/21/2024 9:15:36 am (CST)
$32 01/19/2024 11:22:28 pm (CST)
$27 01/19/2024 11:22:28 pm (CST)
$10 01/19/2024 1:57:01 am (CST)
* Proxy Bid Battle: In the event of two customers inputting matching proxy bids, the leading bid goes to the earliest of the two proxy bids. Tie winners are shown in bold.