Handcrafted Sunset Necklace. A string of oblong-shaped red aventurine gemstones form the plush 15-inch classic Sunset Necklace. Red aventurine is type of quartz that due to inclusions of hematite and goethite has a glassy shimmering quality. In fact, the name aventurine comes from the Italian word 'ventura' that means 'by chance' and refers to Italian glass, which was accidentally discovered in the 1700s. Handcrafted with with brass wire, the Sunset Necklace is both striking and versatile as you can wear it in any season. The necklace is also adjustable up to 18 inches.