From the Prisma collection; The deep saturated hue of a black agate contrasts beautifully with 18K yellow gold in this unique pendant necklace; Black agate; 18K yellow gold; 16-18"L; pendant: 0.9"L; Lobster clasp closure; Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care; Photo may have been enlarged and/or enhanced; Made in Italy