Natural materials such as stones and shells are becoming popular engraving items. While they're often darkly-colored on the outside, engraving them results in a near-white color that produces a wonderful contrast.
Here we'll walk you through the steps to create a customized rock oil candle, which makes an excellent (and very unique!) gift item for customers - or yourself! Additionally, since you can refill the oil supply, this candle will last a lifetime.