Tiny Palm Green Onyx Leaf Necklace. Our exclusive design this beautiful palm Leaf charm with faceted green onyx stone will transport you to a tropical wonderland. Gold plated bronze charm approx. 1/2” tall. Gold filled chain 16” long. Buy yours today! Green Onyx is a symbol of purity and restfulness. It has the power to relieve you of your worries, fears, tension, and stress. Its green soothing color will give you strong and positive feelings, and it will give you the mental support that you need to make the wisest decisions during times of difficulty.