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Golden Yellow
Originally applied as a trade name for "Golden Beryl" from Rössing, Namibia. See E. Kaiser (1912) Centr. Min. p385. Now in more common use for any gem-quality Golden Beryl.
A variety of Beryl

A golden yellow gem variety of Beryl.
Originally reported from both "Hoffnungstrahl"-Pegmatite near Rössing station, Arandis, Arandis District, Erongo Region, Namibia and Litchfield Co., Connecticut, USA.

NOTE: "Heliodor" has been reported from several localities in the Tadjikistan, Afghanistan and Pakistan areas - it is highly likely that all such specimens are lower-grade Aquamarine which has been irradiated to turn it golden yellow. No confirmed and verified evidence of Heliodor being found in the field in these areas has yet been made available, so all "Heliodor" specimens from these areas should be treated with great suspicion. (Ref: ExtraLapis issue on Beryl plus personal communication to J.Ralph from several reliable sources)

Visit for gemological information about Heliodor.

Classification of Heliodor

Physical Properties of Heliodor

Golden Yellow

Chemical Properties of Heliodor

Elements listed in formula:

Other Names for Heliodor

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Heliodor

Reference List:
S.L. Penfield (1888): Amer. J. Sci ser. 3, 36, 317.

Kaiser, E. (1912): Eine neues Beryll (Aquamarin)-Vorkommen in Deutsch-Südwestafrika. Centrbl. Mineral etc, 1912. p. 385-390.

Jahn, Steffen (2001): Goldberyll (Heliodor) vom Hoffnungsstrahl-Pegmatite bei Rössing. in Jahn et al (eds): Namibia. Zauberwelt edler Steine und Kristalle. Bode Verlag. 2001, p 119

Jana Fridrichová, Peter Bačík, Petra Rusinová, Marcel Miglierini, Valéria Bizovská, Peter Antal (2014): Crystal-chemical effects of heat treatment on aquamarines and yellow beryl from Thanh Hoa Province, Vietnam. 4th Central European Mineralogical Conference, Skalský Dvůr, Czech Republic, 23-26 April 2014, Abstract Volume, 39. []

Internet Links for Heliodor URL:
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The following Heliodor specimens are currently listed for sale on

Localities for Heliodor

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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