Certain precious stones naturally display their best qualities in cabochon form, particularly those with special optical effects like asterism or chatoyancy that require the smooth, domed surface to properly manifest. Opaque high-quality gems like fine turquoise and lapis lazuli showcase their natural beauty through the smooth cabochon surface rather than faceting, which would diminish their unique color patterns and aesthetic appeal. Additionally, materials with inclusions that might detract from a faceted stone often become distinctive character elements in well-executed cabochon cuts.