What rock is chrysoberyl found in?
metamorphic rocks
Geologic Occurrence Thus, chrysoberyl usually forms in pegmatites and in metamorphic rocks associated with pegmatites. These include mica schists and dolomitic marbles. Chrysoberyl is also found along with other gem minerals in placer deposits. It is a hard, weathering-resistant mineral with a high specific gravity.
What gems are chrysoberyl?
The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl2O4. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning “a gold-white spar”.
What is the difference between beryl and chrysoberyl?
Beryl is a silicate with chemical composition Be3Al2(SiO3)6 and chrysoberyl is an oxide with composition BeAl2O4. Although both beryl and chrysoberyl contain beryllium, they are separate gemstone species unrelated in any other way.
What is the difference between chrysoberyl and alexandrite?
Alexandrite is that variety of chrysoberyl that changes color as a function of the light source; green in daylight and red under incandescent light. Chrysoberyl is normally yellow, yellow-green, or brownish with its color being caused by the presence of iron.
What is chrysoberyl good for?
Chrysoberyl brings the qualities of discipline and self control. It promotes concentration and the ability to learn, enabling the wearer to think clearly and far-sightedly. Chrysoberyl aligns the solar plexus and crown chakras. It opens the crown chakra and increases both spiritual and personal power.
Is alexandrite a chrysoberyl?
Alexandrite is a very rare and valuable variety of chrysoberyl that shows color change. However, not all color-change chrysoberyls have the classic range of colors that alexandrites show. Although these gems are uncommon and valuable in their own right, they are sometimes marketed misleadingly as alexandrites.
Is chrysoberyl a ruby?
Commonly, gem spinels are red and closely resemble rubies: Black Prince’s Ruby….Chatoyant Chrysoberyl:
| COMPOSITION | [Metal][Metal]2O4 |
|---|---|
| HARDNESS | 8 |
| CRYSTAL SYSTEM | Cubic |
| COLOR | Red, pink, green, blue, yellow, violet… |
| GROWTH HABIT | Octahedral crystals |