I was so excited when I found this rare two-toned piece of dark blue seaglass. The reason it has two different tones is because it came from a glass blowing factory in the Victorian era where they mixed glass, and after spending many decades under the waves washed ashore at the nearby Seaham beach.
 
The back and sides are set in recycled sterling eco-silver. It comes on a delicate 18 inch sterling silver chain in a recyled gift box. Width: 9 mm, Length: 11 mm.