Heliodor and Golden Beryl are the greenish-yellow to yellow varieties of Beryl. Beryl is best known for its famous gem varieties Emerald and Aquamarine, but other varieties such as Heliodor and Golden Beryl are also used as gemstones. In a strict sense, Heliodor and Golden Beryl are distinguished by their colour, where Heliodor has a greenish-yellow hue, and Golden Beryl is a purer yellow or an orange-yellow. However, in both the mineral and gemstone trade, this distinction is not usually made and both terms are interchangeable, with the term Golden Beryl being the more frequently used term in the gemstone market. The term Heliodor may also be used to describe light green, orange, and brown Beryl.
Rounds: 2.5mm – 8mm
Oval: 4x3mm – 10x8mm
Pear: 6x4mm – 14x9mm
Marquise: 4x2mm – 12x6mm
Octagonal: 6x4mm – 14x10mm
Heart: 4mm – 6mm
Square: 4mm – 6mm
A selection of specimen single stones are available
Chemical Formula: Al2Be3(Si6O16)
Crystal Structure: Hexagonal
Colour: Yellow, Orange, Brown
Hardness: 7.5-8.0 on Moh`s scale
Refractive Index: 1.577-1.583
Specific Gravity: 2.67 to 2.78
Treatments: Heliodor and Golden Beryl gemstones are usually in their natural colours and not treated or enhanced. Colour may be improved by heat-treatment or be created by irradiation of the colourless variety.
Care: When cleaning, you can use warm soapy water and tissue or a soft cloth. It is best to avoid the use of ultrasonic cleaners and steamers to clean. Beryls should be kept away from prolonged exposure to excessive heat.