Gold pearl necklaces add glamorous beauty to any jewelry collection. Rare golden pearls are naturally produced in the South Seas by the gold-lipped variety of oysters. These oyster beds exist only off the coasts of the Philippines, Indonesia, and Australia. Criteria such as rarity and glowing color establish pearls' high value. Golden pearls dark rich color created a high demand for gold pearl necklaces. Gold necklaces' lengths and pearl size vary. Lengths typically range from 16 inches to 24 inches. Pearl diameters used for necklaces range from 6mm to 16mm. Smaller pearls exist but do not work well in necklaces. Pearls are matched carefully for size, color, and quality before stringing begins. Making gold clasps that match the pearls' color creates a unified look. Other materials can be used though.Fine jewelry that lasts while staying beautiful must begin with quality materials. Pearls are rated for quality on these elements: luster. nacre, and shape. Rating gold pearls' luster, the shine on their surfaces, as superior, excellent, fair or poor is done according to flaws or imperfections that may be on their surfaces. Oysters create nacre around pearls. Thick nacre indicates long pearl life. Pearls with thick nacre maintain surface shine longer than pearls with thin nacre. If a pearl loses its luster, it loses the expression of its beauty.Shapes vary widely in pearls. Pearls' shapes dictate value. Shapes also dictate what type necklace is best for a pearl. The perfect round is the most desirable shape, but is least often found. This rare perfection brings a higher price. Off-round shapes, while not actually perfectly round, will usually appear round when strung. A string of pearls is the best use for these shapes.Teardrop or pear-shaped pearls, if perfect, are valuable. Teardrops create beautiful impressions suspended on gold or sterling silver chains. Baroque golden pearls with uneven shapes and pitted surfaces lack high value. Many people actually like these unusual shapes created by oysters. Pendant on chains, hanging baroque pearls suit their tastes. Thoughtful choices in acquiring gold pearl necklaces help ensure that an acquisition lasts many years. Like all jewelry gold pearl necklaces need proper care.