Gypsum w/ movable bubble (rare) Kay Robertson Coll.

Naica, Chihuahua, Mexico
Small Cabinet, 8.8 x 7.0 x 6.7 cm
Start Time: 03/05/2020 6:30:00 pm (CST)
End Time: 03/12/2020 6:30:00 pm (CDT)
Auction Closed
Winning Bid: $45
View Closed Auction Set

Item Description

Movable bubbles are an uncommon phenomena in Nature. One side of this sculptural cluster of intergrown transparent to translucent, striated to smooth gypsum prisms hosts a striking 2 mm movable bubble from the famous mines at Naica. The bubble moves about 1.2 cm within the gypsum crystal. Ex Kay Robertson Collection # 1118 and acquired from Scott Williams in the 1950s or 60s. Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). The locality information is partially incorrect on both the Williams and Robertson labels. RARE and exciting gypsum with a movable bubble from Naica.

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Bidding History

Bid Amount Bid Time
$45 03/12/2020 5:58:23 pm (CDT)
$40 03/12/2020 5:58:23 pm (CDT)
$38 03/10/2020 5:22:52 pm (CDT)
$33 03/10/2020 5:22:28 pm (CDT)
$33 03/10/2020 5:22:52 pm (CDT)
$30 03/10/2020 5:22:27 pm (CDT)
$25 03/08/2020 8:11:42 pm (CDT)
$20 03/08/2020 8:11:41 pm (CDT)
$10 03/08/2020 3:12:07 pm (CDT)