Amber from the Sisteron-Montagne de Lure region. A–B: Aptian from Salignac. C–F: Albian from Salignac. G–I: Albian from Aubignosc. J–K: Cenomanian of Saint Etienne-les-Orgues. A: nodule with an opaque orange exterior appearance showing the various resin flows which compose it; B: thin section of the nodule in photo A showing the different layers of resin; C: nodule with a characteristic reddish appearance; D: nodule with translucent court and opaque periphery; E: thin sections of nodules with translucent specimens (left), heterogeneous opaque (center), homogeneous opaque (right); F: amber nodule seen under SEM with an area (arrow) marked by filamentous networks; G: amber grain in its sandstone gangue; H: thin sections of amber grain from Aubignosc showing an opaque heterogeneous appearance; I: view of fragment of amber grain from Aubignosc under SEM; J: translucent amber grains from Saint-Etienne-les-Orgues; K: thin sections of grains showing the presence of numerous small bubbles. (MNHN collection).