6.45 Ct bright rainbow boulder opal Type_Tiny A pastel rainbow boulder opal

A pastel rainbow boulder opal heart with a striped pattern

bright green-blue boulder opal

but because the remaining internal structures create a mesmerizing inner world that is visible through the transparent and  translucent opal

36 Ct oval boulder opal boasts an impressive array of colours which span the majority of its surface

At our Russells opal mine we have found that this silica solution occupies a void most probably left by decaying tree roots or branches

6.45 Ct bright rainbow boulder opal Type_Tiny A pastel rainbow boulder opalThis 6. 45 carat boulder opal has a rare combination of colors including orange, yellow, lime green, and turquoise. Its vibrant hue and exceptional clarity make it a unique and beautiful gemstone, sure to add magic to any jewelry piece.