Rosalinda

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Rosalinda Classification
Common Name Rosalinda
Species Rock
Rosalinda Optical Properties
Transparency Transparent - Opaque
Dispersion Strength: None
Refractive Index 1.540-1.550
Birefringence 0.004-0.008
Optic Character Uniaxial
Optic Sign Negative
Polariscope Reaction Aggregate (AGG)
Fluorescence SWUV: orange to red, pink and yellow
LWUV: white, yellow and red
Rosalinda Characteristic Physical Properties
Hardness 5.5-6
Streak White
Specific Gravity 2.500-2.590
Inclusions Epidote and Grossular Garnet
Fracture Conchoidal to uneven
Cleavage Distinct
Rosalinda Chemistry & Crystallography
Chemical Name Sodium aluminum chloro-silicate
Chemical Formula mNa4(Al3Si9O24)Cl with nCa4(Al6Si6O24)CO3
Crystal System Tetragonal
Chemistry Classification Silicate

Alternate Names

Marialite

Countries of Origin

United States of America (the); Peru

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Tim Matthews

Author

Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.