"Fine enough to be sold at auction by Sothebys and gorgeous enough to land in my collection (I was the lucky bidder), this amazing brooch is finally up for sale again. This Scottish Celtic brooch dates to circa 1880, with fine Etruscan filigree and and a superb center citrine. The five natural citrines look amazing set against what the Sotheby's auctioneer called the 'bloom\" on the gold, caused by the gradual patina of wear from the 15ct gold wash. It has that heirloom look only real age…