The garnets from mantle-derived rocks, peridotites, and eclogites commonly contain a pyrope variety. The semi-precious stone rhodolite is a garnet of ~70% pyrope composition. The minerals in aluminium-garnet group are almandine, grossularite, pyrope, and spessartine. The mineral pyrope is a member of the garnet group. The typical eclogite mineral assemblage is garnet (pyrope to almandine) plus clinopyroxene (omphacite). Pyrope is common in peridotite xenoliths from kimberlite pipes, some of which are diamond-bearing. Beautiful, deep red crystals (seen above-right) similar to pyrope and almandite garnet are also known. These minerals include chromite, pyrope, diopside, picroilmenite, forsterite, orthopyroxene, as well as small diamonds. Iron and manganese substitute for the magnesium in the pyrope structure. Austral thrush ("Turdus falcklandii") and fire-eyed diucon ("Xolmis pyrope"). Pyrope is an indicator mineral for high-pressure rocks. The color of pyrope varies from deep red to black.