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Beryl : Be3Al2Si6O18, Albite (Var: Cleavelandite) : Na[AlSi3O8] | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA A natural deep bluish green to pale grayish blue beryl crystal cluster on grayish blue cleavelandite; from the Esmeralda mine, Mesa Grande, San Diego County, California, USA. Specimen measures approximately 20x40x30mm. Courtesy Pala International. |
| © 2003 SLR | Photo ID: 66551 View Count: 247 |
Beryl (Var: Morganite) : Be3Al2Si6O18 | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA 7.6 x 5.5 x 3.4 cm. A major piece for the locale. This is a special morganite, and the only good one I have personally seen for sale from this locality. It is a sharp morganite, of a crystallographic quality normally reserved for Afghani material…and almost unheard of from San Diego County. The white albite association in particular makes it ... |
| © Rob Lavinsky | Photo ID: 259780 View Count: 9 |
Quartz (Var: Citrine) : SiO2 | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA A natural brownish yellow quartz crystal; from the Esmeralda mine, Mesa Grande, San Diego County, California, USA. Specimen measures approximately 69x93x31mm. Courtesy Pala International. |
| © 2003 SLR | Photo ID: 66552 View Count: 207 |
Quartz (Var: Citrine) : SiO2 | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA 8.5 x 6.5 x 2.9 cm. An old and little-known location today, the Esmeralda was mined heavily in the early 1900s and this piece may well date back that far. It is unusual in that citrine is rare for the county. Ex. William Larson Collection. |
| © Rob Lavinsky | Photo ID: 249617 View Count: 20 |
Tourmaline : AD3G6(BO3)3[T6O18]Y3Z | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA Rare locality piece! Exceptional indicolite for County material! From John Sinkankas. In fact, this specimen was collected by John Sinkankas from the last tourmaline pocket he hit at the Esmeralda, over 30 years ago. 2 x 0.8 x 0.7 cm |
| © Rob Lavinsky | Photo ID: 29636 View Count: 274 |
Tourmaline (Var: Indicolite) : AD3G6(BO3)3[T6O18]Y3Z | |
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Esmeralda Mine, Mesa Grande District, San Diego Co., California, USA A natural dark bluish green to greenish blue tourmaline with complex basal termination and matching specialty cut gem; from the Esmeralda mine, Mesa Grande, San Diego County, California, USA. Specimen crystal measures approximately 87x18x12mm, and faceted stone measures 13x9x4mm. Courtesy Pala International. |
| © 2003 SLR | Photo ID: 66553 View Count: 258 |
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