No it's not diamonds, it's really ice, you know the cold stuff. We were visiting a Frank Lloyd Wright Usonian home recently and they had an 1940's refrigerator with the old aluminum style ice trays. The docent told us kids have no concept of making ice in ice trays. One even asked what the recipe for ice was. So the ice machines have it. Canon G10, 1/60 sec at f/6.3, ISO 400, contrast highly exaggerated.
From 365 Project The Air Force Memorial in glows against low hanging clouds and mist. Located on a promontory in Arlington, Virginia, overlooking the Pentagon and adjacent to Arlington Cemetery, the memorial's three 270 feet tall stainless arcs evoke the spirit of flight. Taken with a Canon 40D, 5.0s exposure at f/8.0, ISO 200, 28mm equivalent focal length, mounted on a tripod.
This is a reproduction on an early 20th Century "squirrel cage" carbon filament light bulb built by Thomas Edison. In today's modern reproductions the filaments are made of tungsten, which burns three times brighter than the original carbon filament versions. They are really getting popular in vintage bare blub fixtures. This one was hanging over my table at Tarrant's Cafe , 1 W. Broad Street in Richmond Virginia. Canon G15, 1/15 sec @ f/8.0, ISO 200, in macro mode.