Beryl (Emerald)

Be3Al2(SiO3)6

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A beryllium aluminum cyclosilicate with the formula Be3Al2(SiO3)6, beryl is the parent of several celebrated gemstones. Emerald owes its green to chromium, aquamarine its blue, morganite its pink, and heliodor its yellow, while goshenite is colorless. The mineral crystallizes in the hexagonal system as prismatic crystals, reaching a Mohs hardness of 7.5 to 8 with a specific gravity between 2.63 and 2.92. It is transparent and vitreous, with a colorless streak and poor basal cleavage. Emerald in particular has been among the most prized gemstones for thousands of years, its value tied to color saturation more than to clarity. A hardness of 7.5 to 8 gives the gem varieties good durability, and their value tracks color saturation more than clarity.

Beryl is a beryllium aluminum cyclosilicate with several gem varieties: emerald (green, colored by chromium), aquamarine (blue), morganite (pink), heliodor (yellow), and goshenite (colorless). Emerald has been one of the most prized gemstones for thousands of years.

결정계 Hexagonal
광물 분류 09 Silicates
모스 경도 7.5-8.0
비중 2.63-2.92
색상 Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor)
광택 Vitreous
조흔색 Colorless
벽개 Poor {0001}
단구 Conchoidal to uneven
투명도 Transparent
결정 습성 Prismatic hexagonal

모스 경도

Mohs Hardness: 7.5 – 8.0
1 Soft10 Hard
Beryl (Emerald) has a Mohs hardness of 7.5–8 on the 1–10 mineral hardness scale.
모스 경도 Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

결정계

Hexagonal
Beryl (Emerald) crystallizes in the Hexagonal crystal system.
특성 Value
결정계 Hexagonal
Axial Relationships a = b ≠ c, α = β = 90°, γ = 120°

Frequently Asked Questions

What is the hardness of Beryl (Emerald)?
Beryl (Emerald) has a Mohs hardness of 7.5-8.0.
What crystal system does Beryl (Emerald) belong to?
Beryl (Emerald) crystallizes in the Hexagonal crystal system.
What color is Beryl (Emerald)?
Beryl (Emerald) is typically Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor).
What type of luster does Beryl (Emerald) have?
Beryl (Emerald) exhibits a Vitreous luster.
What is the chemical formula of Beryl (Emerald)?
The chemical formula of Beryl (Emerald) is Be3Al2(SiO3)6.