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$451.00
Reserve Not Met
Current Bid
10
Bids
Closed
06/04/2022 09:27 am
10
887
5

Rarest 8.00 Carat Top Quality Loupe Clean Bastnasite Gemstone

SKU
Dimensions (mm)
15.630 x 6.870 x 5.100mm
Weight (cts)
8.000
Treatment
No Treatment
Type
Faceted
Colours

Bastnäsite-(Ce), which has the chemical formula (Ce,RE)(CO3)(F,OH), and parisite-(Ce), or Ca(Ce,RE) 2(CO3) 3(F,OH)2, are cerium-dominant rare-earth (RE) carbonates. Although they very rarely form as crystals large and clean enough for faceting, one locality in Pakistan (Zagi or Zegi Mountain) has produced bastnäsite-(Ce) that has been faceted into stones up to 20 ct (Johnson, 1999; Obodda and Leavens, 2004). Gem-quality parisite-(Ce) has been reported very rarely, usually associated with Colombian emeralds such as those from Muzo (Henn et al., 1992). In fact, the mineral is named in honor of J. I. Paris, one of the first managers of the Muzo mine (Palache et al., 1963). This note reports on bastnäsite- (Ce) and parisite-(Ce) from Malawi’s Mt. Malosa, where these minerals occur as well-formed crystals that locally may contain clear, gem-quality portions (e.g., figure 1). One of the authors (AG) visited the deposit in 2002 for research purposes, and has documented the geology and mineralogy of the area in other publications (e.g., Guastoni et al., 2007, 2009).

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argemsjewelry
argemsjewelry
Bangrak, Thailand
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Bids History (10)

Reserve not met

whitemare
Purchased from this seller previously
2 years ago
$450.00
whitemare
Purchased from this seller previously
2 years ago
$350.00
whitemare
Purchased from this seller previously
2 years ago
$221.00
3 years ago
$200.00
3 years ago
$100.00
robintaylorjack
Purchased from this seller previously
3 years ago
$25.00
robintaylorjack
Purchased from this seller previously
3 years ago
$19.00
robintaylorjack
Purchased from this seller previously
3 years ago
$13.00
robintaylorjack
Purchased from this seller previously
3 years ago
$7.00
robintaylorjack
Purchased from this seller previously
3 years ago
$1.00

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Shipping Details

Shipping:
$15.00 21 days via Standard Shipping - Tracked
Ships from:
Thailand

Payment Options

  • paypal

Overview

Listing Type : Standard
Product ID : 1412447
Estimated RRP : $6,000.00
Starting Bid : $1
Starts : 2nd April 2022 09:20 am AEST
Ends : 7th April 2022 02:27 am AEST
* All prices are in USD