Serpentine (with quartz vein) — metamorphic Identification & Properties | Geo-Gem
Serpentine (with quartz vein) is a metamorphic. Use a steel nail or knife to scratch the green matrix—serpentine is relatively soft (Mohs < 4), so it should scratch easily. The quartz vein will be hard (Mohs 7). A streak test: serpentine generally gives a white streak, chlorite/actinoli…