Andradite var: Demantoid and Topazolite

Antetezambato Demantoid-Topazolite Mine, Antsakoamanondro, Ambanja, Diana, Madagascar
Ex. Ron Romanella
Thumbnail, 2.7 x 2.6 x 2.6
Start Time: 04/18/2024 8:00:00 pm (CDT)
End Time: 04/25/2024 6:51:00 pm (CDT)
Auction Closed
Winning Bid: $363

Item Description

These fantastic Andradite specimens started showing up on the market in 2010. This limited, but world-class discovery certainly bolstered the world's supply of Andradite specimens (both in the forms of the varieties Demantoid and Topazolite). As mentioned the locality was short-lived, and the Antetezambato Mine produced specimen for only a brief time. It is almost certain according to our source that no more specimens will be ever collected, and it's a shame because these are some of the best examples of Andradite from any modern locality. It's important to note that it's rare to find good gemmy crystals of Andradite on matrix like this. This thumbnail sized piece is a showy and fine quality example featuring several of very sharp, highly lustrous, good sized, crystals of both golden-brown Topazolite and greenish Demantoid showing trapezohedral and dodecahedral faces sitting on matrix. Internally, the crystals are gemmy, and the largest crystal measures 1.6 cm across. A good quality and showy piece with highly attractive crystals. Very little damage, and rather eye-catching.
This piece comes to us from the legendary Ron Romanella (February 28, 1932 - October 24, 2022), a well-known gem and mineral dealer from New York City. He studied mineralogy at Columbia School of Mines, and he was mentored by Dr. Frederick Pough of the American Museum of Natural History. Ron learned about the business side from well-known mineral dealers Hugh Ford and Maurice Hammoneau. Ron himself was a mentor to other successful East Coast mineral dealers such as Larry Conklin, Herb Obodda and even employed Dave Wilber for a time. He largely transitioned out of selling minerals as his business focused more on gems for the last few decades, and his sons Michael and Jerry have been running the family business in Scottsdale for many years now. With that said, Ron was one of the great powerhouse mineral dealers in the US for many years, offering fine quality specimens and gem crystals from classic and contemporary localities. Among his top achievements, is that Ron is credited with importing the first known crystals of Tanzanite into the US in the 1960s.

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Bidding History

Bid Amount Bid Time
$363 04/25/2024 6:47:50 pm (CDT)
$353 04/25/2024 6:47:50 pm (CDT)
$343 04/25/2024 6:46:21 pm (CDT)
$333 04/25/2024 6:46:21 pm (CDT)
$323 04/25/2024 6:45:51 pm (CDT)
$313 04/25/2024 6:45:51 pm (CDT)
$303 04/25/2024 6:43:53 pm (CDT)
$293 04/25/2024 6:43:53 pm (CDT)
$283 04/25/2024 6:40:54 pm (CDT)
$273 04/25/2024 6:40:54 pm (CDT)
$263 04/25/2024 6:38:40 pm (CDT)
$253 04/25/2024 6:34:33 pm (CDT)
$250 04/25/2024 6:34:33 pm (CDT)
$243 04/25/2024 6:34:19 pm (CDT)
$233 04/25/2024 6:34:19 pm (CDT)
$223 04/25/2024 6:33:10 pm (CDT)
$213 04/25/2024 6:33:10 pm (CDT)
$203 04/25/2024 6:21:06 pm (CDT)
$193 04/25/2024 6:21:06 pm (CDT)
$190 04/25/2024 2:52:15 pm (CDT)
$180 04/25/2024 2:52:15 pm (CDT)
$170 04/24/2024 7:15:47 pm (CDT)
$169 04/24/2024 7:15:47 pm (CDT)
$160 04/24/2024 7:14:32 pm (CDT)
$150 04/24/2024 7:14:32 pm (CDT)
$140 04/23/2024 8:39:11 pm (CDT)
$130 04/23/2024 8:39:11 pm (CDT)
$120 04/23/2024 5:20:24 pm (CDT)
$110 04/21/2024 10:11:54 am (CDT)
$100 * 04/21/2024 10:11:34 am (CDT)
$100 * 04/21/2024 10:11:34 am (CDT)
$80 04/21/2024 10:09:46 am (CDT)
$70 04/21/2024 10:09:46 am (CDT)
$60 04/20/2024 2:44:48 pm (CDT)
$50 04/19/2024 9:40:07 pm (CDT)
$44 04/19/2024 9:40:07 pm (CDT)
$35 04/19/2024 9:39:54 pm (CDT)
$30 04/19/2024 9:39:54 pm (CDT)
$25 04/19/2024 12:56:56 pm (CDT)
$20 04/19/2024 12:56:56 pm (CDT)
$10 04/18/2024 10:28:26 pm (CDT)
* 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.