“The water in front of me beckons with the green-blue milky-white opalescence peculiar to reef shallows.”

“Also in this case, the formation of vesicles is suggested by the opalescence of the solution.”

“It is milky and turbid and represents a phenomenon known as critical opalescence.”

“I just bought a beautiful opal necklace that showcases the mesmerizing colors of this silica-based mineral.”

“I was cycling through the twilit back fields of Canterbury past milk opal bonfires on my way to visit Toni in her caravan.”

“It shimmered through the multicoloured opal to bathe the area in a spectrum of colours.”

“Diamonds and opals and onyx sat in lumps in the sparkling coloured windows.”

“This includes opals, turquoise, malachite, pearls, amber, coral, shells, and similar soft or porous materials.”

“The berries are an unusual creation of repousse silver covered in enamel and interspersed with carved carnelians and Mexican opals.”