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Polarised light micrograph of a crystal of urea
A cup.Man! You gave away too many clues too fast!
I already said a cup!
This strange object is a drinking cup. It is made of silver covered in a thin layer of gold, called gilding. It was made by Christian Van Vianen, a goldsmith, who was born in Holland but made the cup in England. Van Vianen started out with a flat sheet of silver. He then heated it up until it was red-hot, which made it go soft, and hammered it to make the shape. He then used smaller hammers to make the pattern, tapping from both sides and stopping every now and then to heat the silver up again. This technique is called 'chasing'.
cows rear end