Fossilized river rock, a relic from when tools were chipped, not clicked.
Stone Age is a light grey.
It can be described as light, pale and neutral.
Set in black, because black reads best on it.
The Stone Age was a broad prehistoric period during which stone was widely used to make stone tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years and ended between 4000 BC and 2000 BC, with the advent of metalworking. Because of its enormous timescale, it encompasses 99% of human history.
Read on WikipediaStone Age is a compilation album of songs by the English rock band the Rolling Stones, released in 1971 by Decca Records. Featuring songs that had never appeared on a UK album, it was the first compilation issued by Decca after the Stones had left the label and set up their own record label, and was adamantly opposed by the band. It reached No. 4 on the UK charts.
Read on WikipediaIn geology, a rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.
Read on WikipediaProper noun