The smoky fragrance produced by burning Amber Resin placed on charcoal disks is quite unique and amazingly evocative.
 
Incense Resin is sold in 50g tubs. The weights are approximate and are around 45-50g.

Burning Incense Resin: Light the charcoal and place it in your incense holder. Hold the charcoal with tongs. The charcoal will then self-ignite across the surface. When the charcoal starts to go grey around the edges this is the time to add resin.  Often people add sand to incense holder to help absorb heat.