4.67 ct Semi-Black Trapezoid Opal

Opal type: Dark opal
Colors: Blue, indigo, green, yellow, orange
Weight: 4.67 carats
Dimensions: 23.50 x 9.75 x 3.25 mm
Shape: Trapezoid
Cut: Cabochon
Body tone: N5
Treatment: None
Origin: Lightning Ridge, Australia