FIC is an American jewellery company trading in precious metals and gemstones and is the Franki Trading Group, they seem to be of high quality and quite expensive on Ebay
Black clam pearls are not nacreous by: Yvonne Hammouda-Eyre
Good Morning it's hard to see these dark pearls on this black background but nevertheless they do appear to have good luster.
Black pearls is a commercial term for grayish, brownish, bluish-green or greenish black pearls found in the Gulf of Mexico and certain Pacific Islands. The cause of the color is not clear but is thought to be due to the nature of the water, in which the mollusks live. Usually, black pearls are artificially colored, by polishing spheres. of hematite. Black clam pearls are not nacreous.
