The clothes that are suitable to be worn with a gold birthstone necklace depends on the color of the stone itself and the kind of event. For example, garnet, which is the birthstone for the month of January, is best worn in formal settings and should be coupled with black or dark fabrics that would bring out the intensity of the red shade. The pale blue aquamarine symbolizing March is ideal for casual wear and outing as it blends well with spring pastels or nautical stripes. July’s birthstone, ruby coming in a vivid red shade, is best paired with darker hues such as black or navy blue or neutral colors such as beige or cream. These colors will complement the ruby and make it the center of attraction it should ideally be. For the December birthstone, bright blue turquoise, avoid neutral colors like black, brown, and navy, instead go for winter whites, shades of gray, or other bright colors like coral or mustard yellow. These tones will harmonize and enrich the tender but strong blue of the turquoise.