Heliodor. Beauty, heliodor is a transparent type of golden-yellow beryllium. This variation, also called golden beryl, has long been known in Ceylon. W 1910 r. in Namibia, a deposit of golden beryl of an exceptionally beautiful color was discovered and named heliodor, which means the gift of the sun. It is believed, that the content of radioactive substances found in this stone is the reason for its beautiful color. For some time, the name heliodor was used only for South African beryl, now, however, it is almost more commonly used for the transparent yellow varieties of beryl.
Morganit. The transparent variety of pink beryllium is morganite, also known as vorobievite. The name morganite comes from the lover and collector of gemstones J.. T. Morgana, name vorobievit - from the surname of the Russian mineralogist W.. I. Vorobyev. Morganite has been found in and around San Diego (California) in Madagascar. The stones from Madagascar are pure pink, Californian stones are pink-salmon shade. Other pink gemstones - cuncite - are also found in places where morganite is present (a variety of podsumene) i rubelit (pink tourmaline).
Goshenite. Very clean, the transparent form of beryllium is goshenite. It was found in North America at Goshen (Massachusetts), Maine, Connecticut i Kalifornii.
Recognition and imitation. The emerald has such a characteristic color, that an experienced stone connoisseur can usually recognize it quickly. However, some varieties of emeralds may resemble other green minerals: zircons or sapphires, demantoid, chrysolite, jade or green fluorite. Emerald differs from these stones by higher hardness, density and optical properties.
German chemists received synthetic emeralds only in the interwar period. These stones were named Igmeralden. Beautiful colors of synthetic emeralds, very similar to natural, is produced from 1940 r. They contain numerous inclusions, sometimes so similar to those contained in natural emeralds, that only an experienced expert in gemstones can distinguish them.
Synthetic emeralds are increasingly used in jewelry, because by improving the synthesis methods, stones of sufficient size are obtained. Green beryllium glass (emerald), obtained by melting emerald crumbs, despite the similar color, it can be easily distinguished by different physical properties. Green synthetic corundum and spinels have different shades of color.
Aquamarines can be mimicked by some varieties of zircon and topaz, and also by synthetic spinels and beryllium glass (akwamarynowe) obtained by melting aquamarine crumbs.
In trade, doublets and triplets imitating the noble varieties of beryl are often found.
The noble varieties of beryllium are suitable in the form of a step or scissor cut.