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Morganite Gemstone Information

Morganite is variety of the species beryl, named after J.P. Morgan a well known American banker and stone collector. The gemstone occurs in soft pink to violet colours, that may appear as light shades of rose, salmon or peach.. Most stones have good clarity with few inclusions and when pale, may be heat-treated to improve the colour.

Source locations for morganite include: Afghanistan, Africa, Brazil, China, Madagascar and the USA

Physical Properties

Stone type:
A variety of the species beryl.
Crystal System:
Hexagonal.
Chemical Composition:
Berylllium aluminium silicate - Be3Al2(SiO3)6.
Colour:
Soft light colours of pink to violet, typically rose, salmon and peach colours. Bluish-pink colours may be seen due to pleochroism.
Lustre:
Vitreous.
Pleochroism:
Dichroic: Pink to bluish pink.
Dispersion:
Low.
Hardness:
7½ - 8 on the Mohs' scale of hardness.
Toughness:
Fair.
Cleavage:
Very imperfect.
Density in gm/cc:
2.68 to 2.74
Double refraction:
Yes.
Refractive index:
1.564 - 1.596

Common Treatments

Pale morganite may by heat-treated to deepen the colour of light material.

Synthetic morganite is also produced in the laboratory (Lab-created).


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