This piece is a Pebblestack pendant made by Binks Edmonds called 'Heart Cairn'
Binks uses Eternal Tools diamond drill bits to drill holes in the beach pebbles from Indonesia, which occur naturally in these colours. The pebbles are then mounted on a sterling wire spindle and riveted into the shadowbox, which is oxidised PMC fine silver.
Just beautiful I think you'll agree.
If you're looking to make something similar and want to know how to drill through pebbles and stone we have a number of tutorials that may help including our very popular " How To carve Hearts into Pebbles and Sea Glass" article. Follow our blog for further tips on various techniques and proper usage of our tools.
Small Diamond Drill Bits