Looks like an ancient piece of some ruins. However, it is just a pillar, nothing special.
Jungle Pillar price in Growtopia: sells for about 2 WL (median of 31 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: YAPI, OP0, JBBLOCK, DJOYII, FEL