Gorgeous and rare Georgian spinner charm circa 1820.
Modelled in high carat gold as two coiled snakes holding a wheel of gemstones:-
Emerald
Garnet
Aqua
Topaz
Amethyst
Pink topaz 
Ruby 
From the side each stone on the wheel is set with a gold forget me not flower, with turquoise cabochon centre. 
The snakes twist at the top to form a loop to hold your chain.
Weighs - 8g
Measures - 30mm tall 
In good antique condition 
English circa 1820