These unbelieveable combos came out in the late 1980s and were promptly sold as AQUAMARINE specimens....for awhile. However, they have retained a high value as phenomenal APATITE specimens, and espeically when in such beautiful combination they are hard to come by today. martin Zinn had the biggest stash of them from this small find, and the pieces such as this that came to market when his collection was dispersed are by far the best on the market in recent years. This is a great piece because it has good fluorite and good quality apatite, but also lots of it - making for wonderful color contrast against the crystallized matrix loaded with white bertrandite. To this day, these remain one of the most desirable things out of Russia from the 1980s and 1990s.