This up to 1000 years old snow has metamorphosed into highly pressurized glacier ice that contains almost no air bubbles. Thus it absorbs the visible light despite the scattered shortest blue fraction, giving it its distinct deep blue waved appearance. This cavity in the glacier ice formed as a result of a glacial mill, or moulin.
Queen Mary's Ruby Diamond Bracelet-Brooch
The Burton Cognac Diamond ring by Van Cleef and Arpels, formerly owned by Elizabeth Taylor....
Abraham Darby from David Austin roses
Norfolk Nebraska clouds before the storm.... 4/14/2012 "Mammatus clouds are most often associated with the anvil cloud and severe thunderstorms. They often extend from the base of a cumulonimbus, but may also be found under altocumulus, altostratus, stratocumulus, and cirrus clouds, as well as volcanic ash clouds. When occurring in cumulonimbus, mammatus are often indicative of a particularly strong storm or perhaps even a tornadic storm."
Heavy clouds before the storm. (Norfolk, Nebraska)