- KSP Aria 'Wood Grain' Essential Oil Diffuser - Large (Dark Brown)Regular Price Product was previously at: $49.99 $49.99 Special Price $19.99Sorry, currently not available for purchase.KSP Aria 'Wood Grain' Essential Oil Diffuser - Large (Light Brown)Regular Price Product was previously at: $49.99 $49.99 Special Price $19.99Currently only available in store