Very Fine Natural Multi Colored Sapphire Necklace with Diamond Bar Stations in 18K Yellow Gold. Seven graduated strands of naturally colored sapphire rondeles measuring approximately 16" to 20" in length. Three 18K yellow gold bar stations are set with a carat of brilliant, round diamonds each for a total of 3 cts of diamonds. Rare to find sapphires which are not color treated. Colors range from clear to pink to yellow to blues.