Goldstone things were offered out to players who participated from xingwang's blog

are a Gold Cap (Topper), Gold Rocket League Trading Prices Rush (Boost), Goldstone (Wheels), and a Gold Nugget (Antenna). 

The Gold Cap, Gold Rush, and Goldstone things were offered out to players who participated in the Rocket League Alpha ultimately between Feb. 23 and Aug. 10 out of 2014, while the Gold Nugget was a resulting remuneration for beta analyzers between the realization of the Alpha and the game's veritable dispatch on July 7, 2015. 

In case you need to get any of these things, it will frustrate you an enormous load of credits, which cost generally $1 for every 100 credits. Here are the current costs ranges for the sum of the Alpha www.lolga.com and Beta things, regardless they shift wildly.