The most famous member of the Beryl group is the precious emerald, the colombian ones even more. Aquamarine is the famous semi-precious member. Heliodor, Morganite, Pezzotaite are less known members. The rarest amon all is the red Beryl, it’s only gem source being closed now.
The rarest of Beryl is the red variety also named Bixbite. It is one of the rarest gems in the world, and the mine in the Wah Wah mountain (Utah), it’s unique source, is now closed. As emeralds the Bixbite quite included, and most of time enhanced with oil treatment.
This chromium rich green beryl is a wonderful emerald coming from the most famous Colombian mine, Muzo. The color is more light green than the « investment » one but I definitively love the incredible neon glow. Under microscope we see the typical three-phase inclusions of Colombian emeralds. Clarity is honorable and the gem of course is treated with oil as 99% of all emeralds, but oiling is very acceptable.
Despite a nice deep color this emerald is very included, and oiled of course. It contains beautiful needle Tremolite inclusions indicating a Zambian origin. Combined to the presence of a bit of white quartz on the bottom, we can clearly establish that the gem comes from the Kagem mine, the second emerald source in the world. The gem also display a very rare cat’s exe effect! Until a very recent time it was considered that emeralds never show chatoyancy. it is probably due to the rarity of effect with Beryl and the fact that most of the gems are faceted (only a cabochon can reveal the effect).
ROugh: © collectorsedge.com
This small colombian emerald is said to come from the famous Muzo mine. It’s pale color is not attractive at all but the stone present a very rare cat’s eye effect. It is oiled.