Rhodolite
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Rhodolite is a purplish-red to raspberry variety of pyrope-almandine garnet whose name derives from the Greek for rose-colored stone, its hue caused by iron and chromium. It is recovered from alluvial deposits in Tanzania, Zimbabwe, India, and North Carolina, and has become one of the most popular garnets in modern jewelry for its vivid pinkish-red tones. A high refractive index, strong brilliance, and characteristic freedom from visible inclusions make rhodolite a highly desirable gem, while its Mohs hardness of 7 to 7.5 supports regular wear. As a natural, untreated garnet, it owes its color entirely to its composition. Crystallizing in the isometric system with a refractive index near 1.76 and a specific gravity of about 3.84, rhodolite is most often faceted to showcase its brilliance.
Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7,0 – 7,5
Specific Gravity
3,84
Refractive Index
1,76
Crystal System
Isometric
Color
various
Mohs Hardness
| Mohs | Reference mineral | Rhodolite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | ● |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Moderate ($50-500/ct)
Where to Buy Rhodolite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
Treatments
This material is reported by G.V. Rogers (unpublished observation) to change from purplish color to a hessonite-type brownish color on heating. A brief check confirmed this change at about 600�C in some rhodolites, but not in others; it could not be reversed by gamma irradiation � Nassau (1984)
7 to 7.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
3.84 +/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.760 +/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
IsotropicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Anomalous double refraction
Red, brownish-red, violet-redUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
(Dark) redHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Reddish purple, Fe2+ in distorted cubic coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
IsometricHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Orientied rutile needles, apatite, undulatory extinction - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 25
Rhodolite information at mindat.org
Kenya
Barot (1993)
Mozambique
J. Marques (2009)
Sri Lanka
G. Zoysa (2009)
About Rhodolite
Rodolite é uma variedade de granada com cor violeta-rosa a vermelho-rosado, resultante de uma mistura de piropo e almandina. O nome deriva do grego para rosa. A sua tonalidade rosa-violácea única distingue-a de outros granadas vermelhos. Descoberta nos Montes Smoky da Carolina do Norte nos finais do século XIX, é hoje principalmente proveniente da África oriental, especialmente Tanzânia, Quénia e Zimbabwe. A rodolite combina a dureza elevada da granada com uma cor mais rara e distinta do que o almandina comum. É muito popular em joalharia contemporânea pela sua cor cativante.
On this page
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Rhodolite?
Rodolite é uma variedade de granada com cor violeta-rosa a vermelho-rosado, resultante de uma mistura de piropo e almandina. O nome deriva do grego para rosa. A sua tonalidade rosa-violácea única distingue-a de outros granadas vermelhos. Descoberta nos Montes Smoky da Carolina do Norte nos finais do
What is the hardness of Rhodolite?
Rhodolite has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Rhodolite?
Rhodolite is primarily Various.
How much does Rhodolite cost?
Rhodolite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Rhodolite?
Rhodolite belongs to the Isometric crystal system.