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Beryl (beryllium aluminum silicate) Types/Color
Aquamarine – light blue to blue-green
Bixbite – Red to strawberry-red
Emerald – Green
Goshenite – colorless
Heliodor – deep yellow
Morganite – Pink to peach
Other beryls may be referred to by their color, such as green beryl and yellow beryl.
Mohs hardness 7.5-8
Refractive index 1.57-1.6
Critical angle 39.5°
Specific gravity 2.65-2.75
Fracture Conchoidal, tough
Dispersion Medium (.014)
Heat sensitivity None
Pleochroism Dichroic – Golden weak (yellow to light-yellow); Goshenite colorless, no dichroism; Green distinct (yellow-green to blue-green); Heliodor weak (gold-yellow to greenish-yellow); Morganite distinct (pale-pink to lavender-pink); Purple distinct (purple to colorless); Yellow (light yellow to medium yellow).
Birefringence (double refraction) Weak (.006-.009)
Crystal structure Hexagonal
Cutting Emerald and bixbite with heavy inclusions can break apart. Otherwise, beryl is probably the easiest stone to facet.
Polishing Beryl polishes easily with alumina or cerium oxide.
Aquamarine In Sterling Necklace 25X15X9 MM 20 cts Hand made 638E Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 30X12X12 MM 20 cts Hand made 751E Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 30X18X10 MM 25 cts Hand made 924E Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 35X18X7 MM 25 cts Hand made 730E Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 35X20X9 MM 40 cts Hand made 481E Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 35X20X10 MM 40 cts Hand made 575F Wire sterling Silver HGE 20 Inch clasp...
Aquamarine In Sterling Necklace 35X20X5 MM 30 cts Hand made 577F Wire sterling Silver HGE 20 Inch clasp...