Bee brooch with topaz, chrome diopside, ruby and emerald, made of 925 silver

Brooch in the shape of a bee made of sterling silver, partly coated with black ruthenium and the wings plated with 18 ct gold. The back of the bee is set with light blue oval topazes from Brazil measuring approx. 3 x 5 mm, the body with pink rubies from Madagascar and a round Colombian emerald. The wings are pavé-set with dark green chrome diopsides from Russia. All stones are of natural origin, the rubies have been enhanced for purity. The brooch measures approx. 39 x 49 mm and weighs approx. 12 grams. The brooch pin is fixed with a ball wheel.