Blue Teardrop Agate Geode Gemstone Pendant, Gemstone Pendant Necklace, Gemstone Jewelry, Handmade Jewelry, Mothers Day Gift Idea, Gift For Her, 18" cord. Item is a beautiful sky blue and white striped agate geode gemstone pendant on a white organza cord.. Measurements: 56x40x7mm gemstone (not including the bail). The chain is a 18in L with a 1-3/4in extender chain.