Hanfords of London Small Black Onyx & Silver Handmade Ring (Size 3.5). Handcrafted in the UK. Birthstone for Leo, July & December. Guaranteed for 12 Months. Entirely Handcrafted in the UK. Comes in a Stunning Hanfords of London Presentation Box Onyx is the Birthstone for Leo, a Traditional Birthstone for July, and a Mystical Birthstone for December. Great Birthday Gift!!