Rhodonite

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Rhodonite is an attractive mineral that is primarily known as an ornamental stone, but is often seen in jewelry in the form of beads or cabochons. This mineral easily falls into the category of rare and exotic, making it highly prized by collectors of specimens and gemstones. Its name, derived from two Greek roots, means "rose-colored stone." Rhodonite, which is commonly found in massive or granular forms, is most often translucent to opaque in appearance. On rare occasion, transparent, gem-quality material may be found. Rhodonite's natural color ranges from pink to rose red to brownish red, often with blackish veins throughout.

Rhodonite Polished
Rhodonite Classification
Common Name Rhodonite
Species Rhodonite
Rhodonite Optical Properties
Transparency Translucent - Opaque
Dispersion Strength: None
Refractive Index 1.711-1.757 Tolerance: (+0.010/-0.013)
Birefringence 0.01-0.014
Optic Character Biaxial
Optic Sign Positive
Polariscope Reaction Aggregate (AGG)
Fluorescence SWUV: Inert
LWUV: Inert
Pleochroism Unobservable
Rhodonite Characteristic Physical Properties
Hardness 5.5-6.5
Streak White
Specific Gravity 3.300-3.760 Typical:3.500
Toughness Good
Inclusions Rhodonite might have black, white or metallic veins or spots of manganese oxide.
Luster Vitreous, Pearly, Dull, Subvitreous
Fracture Conchoidal, Granular, Uneven
Cleavage Perfect, in two directions
Rhodonite Chemistry & Crystallography
Chemical Name manganese iron magnesium calcium silicate
Chemical Formula (Mn, Fe, Mg, Ca) SiO3
Crystal System Triclinic
Chemistry Classification Silicate

Rhodonite Colors

  • Red Rhodonite Red
  • Pink Rhodonite Pink

Alternate Names

Manganese Gravel, Fowlerite

Countries of Origin

Canada; Sweden; United States of America (the); Unknown; China; Russian Federation (the); Brazil; Mexico; South Africa; Madagascar; Australia; Peru

Care

Normal, gentle handling on untreated stones.

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Species/Variety

Rhodonite (single crystal)

Rhodonite is an attractive mineral that is primarily known as an ornamental stone, but is often seen in jewelry in the form of beads or cabochons. This mineral easily falls into the category of rare and exotic, making it highly prized by collectors of specimens and gemstones. Its name, derived from two Greek roots, means "rose-colored stone." Rhodonite, which is commonly found in massive or granular forms, is most often translucent to opaque in appearance. On rare occasion,transparent, gem-quality material may be found. Rhodonite's natural color ranges from pink to rose red to brownish red, often with blackish veins throughout.

Rhodonite (single crystal) Rhodonite
Rhodonite (single crystal) Classification
Common Name Rhodonite (single crystal)
Rhodonite (single crystal) Optical Properties
Pleochroism Dichroic, weak to moderate orangy red and brownish red
Rhodonite (single crystal) Characteristic Physical properties
Inclusions Rhodonite stones sometimes have black dendritic inclusions of manganese oxide.
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.