This is the exact opposite of sparkly dust from a passing comet. It seems to whirl backwards like a tiny galaxy. Perhaps if you collected enough of it, it would merge into an astonishingly valuable solid mass!
Antimatter Dust price in Growtopia: sells for about 4 DL, buyers pay about 2 DL (median of 65 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: IOTM456, BGE, NYELE, Y2TJ, PIMFEN