Vintage SIKARA & CO Sterling aqua chalcedony necklace. Rectangular shaped pendant, smooth cut Aqua Chalcedony stone, set in a thick sterling silver frame. The stone glows in the light. I purchased this piece in the mid 2000s and wore it a few times. The stone is in excellent condition with no chips or scratches. The silver setting has surface scratches from normal wear. Comes with an 18 inch sterling silver box chain with spring clasp. Stamped SIKARA 925 on back of pendant. 925 stamped on chain. 1.25 inches wide x 1 inch tall. 20 grams weight.