Sterling Silver Filigree Art Alexandrite Gemstone Oval Pendant. The Sterling Silver Chain is 18.00" + 2.00" extender. Pendant height: 1.90 Inches; Pendant width: 1.05 Inches Alexandrite gemstone is 13 X 18 mm double side faceted, checkboard, oval cut.   Alexandrite is remarkable and rare gemstone. They display an extraordinary color change according to the ambient lighting, from green in daylight to red in incandescent light from tungsten lamps or candles. Our Alexandrite Gemstones are lab-created and have same color change feature. Filigree is made of delicate metal strands that have been skillfully fashioned to create an outstanding combination of old and modern art. Originating in Mesopotamia, Anatolia.