Diamond dust

Diamond dust can be obtain by dismantling diamonds. It is also used to craft the following items:
 * Lesser Morana runestone
 * Lesser Triglav runestone
 * Negotiator
 * Order of the Flaming Rose sword
 * Sarrim

Diamond dust can be looted from various places, beginning in the Prologue. It is sometimes among the remains of the following:

It can also be purchased from the following merchants:


 * Fioravanti in Flotsam's town square (also sells diagram)
 * Vilmos Bartok in Flotsam
 * Sambor in the camp followers' encampment (also sells diagram)
 * Myron in the Kaedweni camp (also sells the diagram)
 * Relic peddler in the Kaedweni camp
 * Mottle outside Vergen
 * Felicia Cori in Vergen and Loc Muinne (also sells diagram)
 * Polycarp of Rinde in the Order of the Flaming Rose camp (also sells diagram)
 * The Incredible Lockhart in Loc Muinne (also sells diagram)
 * Marcus in Loc Muinne
 * Falas in Loc Muinne (also sells diagram)

It can also be crafted from a diagram. It can be used to craft a number of items, including:

Armor

 * Blasphemer's armor
 * Oathbreaker's armor

Armor enhancements

 * Diamond armor reinforcements

Diamond dust increases the damage inflicted by 40%, and is good for either silver or steel blades.