The average price range for necklaces in yellow gold can vary significantly based on several factors, including the design complexity, the type and quality of the gold, the presence of gemstones or diamonds, and the brand or designer. In general, simple and smaller yellow gold necklaces can be found in the range of $100 to $500, while more intricate or larger pieces with high-quality gemstones or diamonds can range from $500 to several thousand dollars. Custom or designer necklaces may command even higher prices.