Mother of Pearl and Silver: The Andalusian sister Rosalind Birnie Philip subsequently acted as secretary to Whistler and was appointed Whistler's executrix at his death. Whistler painted a number of full-length portraits of Ethel, including "Mother of Pearl and Silver: The Andalusian" and the watercolour "Rose and Silver: Portrait of Mrs Whibley"; and other sketches and etchings of her titled as Miss Ethel Philip or Mrs Whibley. Whistler commenced work on "The Andalusian" in London in 1888, the year Whistler married Beatrix, with the painting being completed in Paris in 1900. Mother of Pearl and Silver: The Andalusian Mother of Pearl and Silver: The Andalusian is a
Pearl are also commonly seen in necklaces. Circled pearls are characterized by concentric ridges, or rings, around the body of the pearl. In general, cultured pearls are less valuable than natural pearls, whereas imitation pearls have almost no value. One way that jewelers can determine whether a pearl is cultured or natural is to have a gemlab perform an X-ray examination of the pearl. If X-rays reveals a nucleus, the pearl is likely a bead-nucleated saltwater pearl. If no nucleus is present, but irregular and small dark inner spots indicating a cavity are visible, combined with concentric rings of organic substance,