Emerald and zircon sterling silver cross pendant with 20 inch chain

This pendant and chain necklace is from an estate purchase showing little to no signs of use.  Genuine green emeralds prong set with white colorless zircon accent gemstones. Set in authentic 925 sterling silver. Sterling silver is most likely plated with platinum or rhodium. Chain is also 925 sterling silver and measures about 20 inches in length. Pendant measures about 1.25 inches in length with a total weight including chain of 6.44 grams. Emeralds are most likely heat treated for color enhancement. 925 STS Chuck Clemency . Estimated original retail value is over $500 reasonable offers considered