The Golden Hearth
The largest and most durable scaled on a dragon, located on the front chest shielding their heart
A dragons heartscale is highly valued by all sorts of trades for their durability, bright colors and magical properties, they contain a large amount of a dragons innate magical properties and if removed the dragon loses those magical properties linked to their heartscale.
Because of this they are really valuable in the craft of magical items, since they can either be siphoned or infused to reduce time and cost.
Siphoning destroys the heartscale, while infusement makes the scale part of the item, when a scale is siphoned it also drains and loses some of it properties.
However if infused they don’t loss any magical properties, but should the scale become inert the item will loss all its properties.
Heartscale become inert and loss their magical properties and bright colors should their original owner die