Antique American Indian Art, LLC. Navajo Sterling Silver Post Earrings By BAL. 1.25″ L x 1″ W. Hand Crafted from Sterling Silver with an Oval Form Malachite Stone with Stamping Design. Navajo Sterling Silver Post Earrings by BAL is a handmade Native American jewelry created by a Navajo artist (or workshop) hallmarked “BAL”. These are vintage or contemporary pieces featuring. 925 sterling silver, often with stamped designs, single-stone settings (like malachite, azurite, rose quartz, or other gemstones), and post backs for pierced ears. We are confident that you will be pleased with the value, service and peace-of-mind that our gallery can offer you. Thank you for looking!