Vintage 14K Gold Snake Brooch Diamond Eyes Opal Enamel Pin
Source - Boylerpf

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Vintage 14K Gold Snake Brooch Diamond Eyes Opal Enamel Pin
Source - Boylerpf
Art Nouveau Opal and Diamond Brooch Pendant
Source: vicmart.com via Pinterest
Les Mondes de Chaumet with Evans Mbugua
Opal Butterfly Brooch ♕ Dutch Royal Jewel Foundation (assumed)
Vintage Opal Pendant Brooch 14K Gold Edwardian Style
Source - Boylerpf
Art Deco Opal Brooch, 9.5ct Floral Spray Antique Pin
Source - Boylerpf
Antique Silver Arts & Crafts Carnelian Moss Agate Opal Brooch
Source - Boylerpf
Opal, Diamond and Multi-Gem Brooch by Cartier
Source: jeanmjkim @ Instagram