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11/12/2025 04:29 pm
Rarest 4.05 Carat Top Quality Loupe Clean Bastnasite Gemstone
17 bids
2874 views
8 watching
Details
- SKU
- Dimensions (mm)
- 11.58 x 6.11 x 4.5mm
- Weight (cts)
- 4.05
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Description
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).
Shipping
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
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| Standard Shipping - Tracked |
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Details
- SKU
- Dimensions (mm)
- 11.58 x 6.11 x 4.5 mm
- Weight (cts)
- 4.05
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Description
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).
Shipping
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| FedEx |
|
|
|
|
Store
Recent Feedback
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PositiveReceived, thank you
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Positive
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Positive
质量还行
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Positive
Very nice stone and very good cut. Thank you :)
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Positive
Nice gemstone. Thank you
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Shipping Details
Costs:
Transit:
21 days via Standard Shipping - Tracked
Ships from:
Thailand
Payment Options
Overview
Listing Type :
Standard
Product ID :
1412448
Estimated RRP :
Starting Bid :
Starts : 27th November 2025 04:29 pm PST
Ends : 11th December 2025 04:29 pm PST
* All prices are in USD