The semimetal/metalloid antimony (Sb) is not common in its native state. It has a metallic luster, silvery-gray color, is somewhat soft (H=3 to 3.5), and is moderately heavy for its size. Other semimetals that occur as native elements are arsenic (As) and bismuth (Bi). The semimetals/metalloids resemble metals in luster, but they break along fractures - they’re brittle. True metals are malleable.
Antimony (3.4 cm across) from South Riverside, California, USA.