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Oferta actual
17
Ofertas
08/01/2026 04:29 pm
Rarest 4.05 Carat Top Quality Loupe Clean Bastnasite Gemstone
17 bids
2929 views
8 mirando
Detalles
- SKU
- Dimensiones (mm)
- 11.58 x 6.11 x 4.5mm
- Peso (cts)
- 4.05
- Treatment
- No Treatment
- Type
- Faceted
- Colores
-
Descripción
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).
Envío
| Proveedor de envío | Envío a Tailandia | Envíos al resto del mundo | Envío combinado ( Tailandia ) | Envío combinado (resto del mundo) |
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| Standard Shipping - Tracked |
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Detalles
- SKU
- Dimensiones (mm)
- 11.58 x 6.11 x 4.5 mm
- Peso (cts)
- 4.05
- Treatment
- No Treatment
- Type
- Faceted
- Colores
-
Descripción
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).
Envío
| Proveedor de envío | Envío a Tailandia | Envíos al resto del mundo | Envío combinado ( Tailandia ) | Envío combinado (resto del mundo) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| FedEx |
|
|
|
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Almacenar
Comentarios recientes
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Positivobeautiful ruby. everything is perfect******. thank you!!
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Positivo
Received, thank you
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Positivo
¿Por qué los usuarios se superan a sí mismos?
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Detalles de envío
Costos:
Tránsito:
21 días a través de Standard Shipping - Tracked
Se envía desde:
Tailandia
Opciones de pago
Descripción general
Tipo de listado :
Standard
ID del Producto :
1412448
PVP estimado :
Precio inicial :
Empieza : 25th December 2025 04:29 pm PST
Finaliza : 8th January 2026 04:29 pm PST
* Todos los precios están en USD