Morganite | Gemopedia

Morganite is the pretty, peachy-pink variety of beryl, cousin to more familiar beryls like emerald and aquamarine. Morganite's beautiful, feminine colors are a result of the presence of manganese. After its discoveries in California and Madagascar in the early 20th century, this pink beryl was renamed morganite as suggested by famed gemologist George F. Kunz. Named in honor of financier and gem enthusiast J. P. Morgan, morganite has many redeeming qualities, including durability, luster, clarity and brilliance. Though there are also small deposits in Brazil, Mozambique, Namibia, Afghanistan, and Russia, quality morganite remains relatively rare. Ironically, it is morganite's rarity that keeps it relatively affordable, since there aren't enough standard-sized stones available for use in manufactured jewelry.
Alternate Names
Pink Beryl, Rose Beryl, Cesian
Colors
Pink, Salmon Pink, Purplish Pink

Morganite Classification

Common Name

Morganite

Species

Beryl

Variety

Morganite

Colors

Pink, Salmon Pink, Purplish Pink

Alternate Names

Pink Beryl, Rose Beryl, Cesian

Gemstone Groups

Key Separations

refractive index, birefringence and optic character. Magnification is the key test for separating natural from synthetic morganite.

Comments

Misnomer: pink emeraldStone will lose it's color if exposed to high temperatures. Manganese is the coloring element.

Morganite Optical Properties

Transparency

Transparent

Refractive Index

1.583-1.59
Tolerance:(+0.012/-0.011)

Birefringence

0.007-0.008

Optic Character

Uniaxial

Optic Sign

Negative

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert to weak pink to violetish red
LWUV: Inert to weak pink to violetish red

CCF Reaction

Pleochroism

Dichroic, unobservable or weak, varying shades of body color

Dispersion

Strength: weak fire Value: 0.014

Comments

Morganite Chemistry & Crystallography

Chemical Name

beryllium aluminum silicate

Chemical Formula

Be3Al2(SiO3)6

Synthesis

overgrowth hydrothermal

Crystal System

Hexagonal

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Comments

Morganite Characteristic Physical Properties

Hardness

7.5

Streak

White

Specific Gravity

2.8-2.91

Toughness

Good

Inclusions

Morganite is a type I clarity stone. Inclusions are rare but liquid and two-phase inclusions, hollow or liquid-filled parallel tubes and fingerprints are sometimes seen.

Luster

Vitreous

Stability

Good

Fracture

Conchoidal

Cleavage

Poor, in one direction

Comments

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