18kt Gold Opal Brooch 12 grams of gold Exceptional piece

Vintage 18K Gold & Natural Opal Brooch • Marked 18K (stamped clearly on the back) • Weight: 12 grams • Stones: Natural opals, cabochon cut, showing play-of-color (likely Ethiopian or Australian white opals) • Style: Mid-century (1950s–1970s) European or American fine jewelry • Construction: Hand-wrought, textured gold — characteristic of: • Italian makers (UnoAErre, Buccellati-style textured gold) • French artisans (hammered + high polish combination) • Higher-end American studios