The usual methods of choice for fractographic analysis are regular light microscopy, often with interference contrast, and scanning electron microscopy (SEM). However, several other microscopic techniques are also useful. One such technique is confocal microscopy (LSCM); capable of height discrimination, of wide-area imaging and ideally suited to quantitative analysis, LSCM has an excellent synergy with SEM. In this paper, LSCM will be used to study the fracture surface of single-crystal sapphire fibers under subcritical crack growth (SCG). When SCG is present, several distinct zones may be identified in the fracture surface: the subcritical zone, the mirror zone, and the branching zone. In the branching zone, the fracture follows a restricted set of "easy" crystalline planes on its propagation, resembling a mountain range where the possible orientations of the slopes are restricted. These fibers have already been studied with SEM, but the shortcomings of the electron microscope restrict the possible studies. In addition to reflection-mode observation, a simple experimental method which allows for fluorescent-mode usage at virtually no economic cost will be introduced. 3D models of the distinct zones of the fracture surface will be built and quantitatively analyzed with profiles and histograms. As compared with SEM, the unique information obtained includes perspective views of the fracture surface, clear SCG-mirror boundary contrast, overall surface orientation statistics, height profiles and easy mirror-zone-limit determination, all with a technique which is fast, non-destructive and which requires almost no sample preparation.