A pear and round black spinel ring in 18K yellow gold over sterling silver creates a cocktail ring where the natural black gemstone's depth and luster meet the warmth of gold in a two-stone design. The pear's pointed teardrop form and the round's familiar brilliant shape create complementary cut contrast - each stone's black contributing its own faceting character to the combined ring presence. Black spinel is a genuine mineral with high luster - not imitation black, but the specific glass-like depth of natural spinel. The gold-and-black combination is bold and contemporary, the warm gold creating maximum contrast with the deep stone.