This is an interesting pendant. It is a good sized marble cross, suspended from a gold (9 k or better) bail. The cross measures nearly 3 inches North to South, and 1 and 3/4 inches East to West at its widest point. It is circa 1880, and quite unusual, as I can't say as I have ever seen a marble cross before.
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Antique English smalls of quality
Specializing in Georgian and Victorian jewelry, English smalls, including leather bound books, silver etc.