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Home / Gem Library / Gemstones Varieties / Sphene April 20, 2024

Natural Sphene

Sphene is a rare collector stone with an unusually high refractive index and and a hardness of 5 -5.5. Because of it's high dispersion and refractive index, a well cut sphene can display stunning brilliance. Sphene is somewhat soft and as a result is more suitable as a pendant than as a ring stone. Sphene is rarely very clean.

Find your Sphene

Our Sphene(s) are available in various shapes, sizes and colors. 150 Sphene(s), too many to look through? You may select any combination of search options. Colors grade into each other and you can search for more than one color at once. For a better selection, try selecting two or three colors, -- your first choice plus the two closest colors.

Shape Length (mm) Width (mm)
Category Weight (cts) Price (USD)
Color range
yellowish green
greenish yellow
slightly yellowish green
yellow-green or green-yellow
strongly yellowish green

Sphene Profile

Color information: Green, yellow. brown
Refractive Index: (1.885-1.990,)-(1.915-2.050)
Chemical Composition: CaTiSiO5
Hardness: 5.5
Density: 3.52-3.54
Crystal Group: Monoclinic
Ocurrence: Austria; India; USA; Brazil; Ankarafa Area, Daraina Commune, Vohémar District, Sava, Madagascar
Sign of the Zodiac: N/A
Month of the year: N/A
Sphene Sphene
Brightness in gemstones is an attribute of visual perception in which a gemstone appears to be radiating light. But few gems actually radiate light and what we see is reflected light. Brightness in the context of gemstones is a subjective attribute and there is no way to quantify it.

The "fire" of Sphene derives from its very high dispersion combined with a high index of refraction. Gems with a high refractive index, and a high dispersion will usually elicit an impression of greater brightness. A diamond’s refractive index is 2.417 and its dispersion is .044. Sphene’s refractive index is 1.900 – 2.034 and its dispersion is .051 so it is arguably a top range brilliancy contender if brilliance could actually quantified.

The dispersion of sphene exceeds that of diamonds and shows flashes of gold, yellow, red and green that diamond cannot. And due to this high dispersion and pleochrism, a well cut stone can reveal a stunning brilliance that will vary in appearance as a function of the light source and the angle of view. Generally it is green, with just about every other color of the rainbow mixed in somewhere.

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Sphene range/
Sphene Single
Sphene Single Oval Eye clean to Slightly included
Size: 23.30 X 17.10 MM
Weight: 36.160 CTS
Shape: Oval
Clarity: Eye clean to Slightly included
Usually ships within 24 hours
USD 16272.00
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Sphene Single
Sphene Single Round Slightly included
Size: 5.70 X 5.70 MM
Weight: 0.880 CTS
Shape: Round
Clarity: Slightly included
Usually ships within 24 hours
USD 52.80
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