This is a lovely example of platinum being worked in such a way so as to look like a spider's web. This metal was used extensively by makers in the Edwardian period because they could create such a light effect, and when inset with diamonds and natural pearls, or other precious stones, the result was superb. Gone was the heavy grey look that one sees in Victorian diamond pieces, when the stones were set in silver, which is a softer metal so tends to have a clumpier look.