easywhat am-i

Glittering points that downward thrust, Sparkling spears that never rust.
Common Wrong Answers
“Star”
Stars are celestial bodies that shine in the night sky, but they do not physically thrust downward or resemble spears, nor are they tangible objects like icicles.
“Diamond”
Diamonds are precious gemstones that sparkle, but they do not form in a downward thrusting manner and are not found in nature as icicles are.
“Spear”
While spears are sharp and pointed like icicles, they are man-made weapons and do not have the glittering or natural qualities described in the riddle.