Peridot and Wood with brass pieces. Adjustable size. 
Peridot:
Increase, prosperity, warmth, well-being
Earth element
Solar Plexus/Heart chakra
Peridot has a warming solar energy, traditionally associated with the sun. It was used as protection against evil spirits, as a symbol of being a torch and bringing prosperity.
It is a stone of positive power, whilst also bringing attractive energies of warmth and harmony. 
An energising stone, bring the wearing into the sphere of earth, bringing lightness and grounded harmony.; abundance and success.