NASA’s Perseverance rover has uncovered high-purity quartz crystals on Mars, a discovery that could reshape the search for ...

For Monica Rich Kosann, whose high jewelry collection, The Jewels of Nature, uses rare Australian black and crystal opals and Mexican fire opals, the answer was hiding in plain sight. Kosann ...

The actress, a presenter at tonight’s ceremony, is wearing a one-of-a-kind Tiffany Blue Book necklace featuring more than 64 carats of crystal opals, and a bracelet to match. The set ...