Fabulous, Victorian Silver and Gold Turquoise, Diamond & Pearl, star bombe brooch / pin.
A fine, antique Victorian brooch featuring six, rose-cut diamonds designed as the points of a star with a central natural pearl mounted in a gold star frame. The star sits in the middle of a Turquoise pave-set ‘bombe’ brooch, framed with a silver rope edging and silver mounted back.
Complete with T-bar & C-clasp fitting.
The diamonds each measure approximately 1.5mm, they are bright and twinkly.
The central pearl has a lovely lustre and silvery colour with purple hues (as displayed in antique pearls).
These beautiful Turquoise gemstones are sky blue, green with slight natural variations in colour (please see note under description).
Highly collectable, this historic brooch will be delivered in a new black leatherette & velvet box as displayed
MEASUREMENTS: 16 x 21mm
WEIGHT: 6 grams
DATE: Victorian (1837 to 1901)
PRODUCT CODE: BR286
Turquoise is a very porous and absorptive precious stone. When exposed to water, oils and other chemicals it soaks them up like a sponge, this can cause a variety of effects. Turquoise is a compound that includes metals such as aluminum, copper or iron. Water and oil can cause some of these metals to oxidize, or in other words rust. As a result of oxidation, the stones can change color. Blue turquoise that contains copper can change from a light blue to a dark green. The iron changes from green to darker green and aluminum from light blue to darker blues and greens.
The oils in our hands have a very similar affect as water. Over years, or even decades, of touching a turquoise stone with our fingers can lead to the stone changing color.