Star K Sterling Silver Vintage Look 7mm Round Promise Engagement Ring. Metal: 925 Sterling Silver. Dimensions: Width: 7.00 This beautiful design is part of the exclusive Star K. Jewelry collection. Star K, is a reputable American Family Business based in New York since 1986, uses only the highest quality materials, and will proudly stand behind all of her products. SIMULATED ALEXANDRITE: The Simulated Birthstone for June. Named after Czar Alexander II of Russia, this very rare gem has the ability to change color. A symbol for change, Alexandrite is said to inspire imagination, creativity and confidence. Lifetime Warranty exclusively offered by Finejewelers. High End Jewerly Box and Gift Packaging Additional Stones: (cubic-zirconia, Shape: baguette-shape, Color: Colorless.)