Chemical Formula Be3Al2SiO6
Color Yellow, Orange, Brown
Hardness 7.5 – 8.0
Crystal System Hexagonal
Refractive Index 1.57 – 1.58
SG 2.6 – 2.8
Transparency Transparent
Double Refraction .006
Luster Vitreous
Cleavage 3,1 – basal
Mineral Class Beryl

They name Heliodor is fairly recent, and is derived from the Greek term “Gift from the Sun”, in allusion to its yellow color. Its name was coined in the early 20th century, when significant deposits of this form of Beryl were discovered that enabled it to be more available as a gemstone. Some Heliodor and Golden Beryl crystals can be quite large, and may also be in flawless crystals that can produce very large clear gemstones.


Heliodor and Golden Beryl are a minor yellow gemstones, being faceted into gemstone cuts as well as polished into cabochons.


HeliodoriteHeliodor and Golden Beryl gemstones are usually in their natural colors and not treated or enhanced.The main sources of this gemstone are Brazil, Madagascar, Namibia, Russia, and the Ukraine.Topaz and Citrine gemstones usually have a more orange tinge, although pure yellow Topaz and bright yellow Citrine (“Lemon Quartz”) can have the same color and appear very similar. Chrysoberyl can also appear very similar and may be difficult to distinguish. Hiddenite is the green gem variety of the mineral Spodumene. Spodumene is a common mineral, but only in several localities does it occur in transparent gem form. One gem form of Spodumene is Kunzite, the other important and much rarer form is Hiddenite. Hiddenite is named after William Earl Hidden, who was instrumental in identifying this new gemstone. The town in North Carolina where this gemstone was found was subsequently given the name “Hiddenite” in honor of the gemstone.
Golden Beryl SOURCES

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