But let’s be a bit more specific. What gives gemstones colors, or rather, what changes the way they absorb and reflect light ...

In the image below, a material is created and an image file selected for it. There is nothing wrong with this early on, while material selection is still fluid. However, at some point the ...

This wasn’t a one-time usage situation, either—the for thousands of years, spanning the final Middle Stone Age and the ... ornaments a richness in color. In a new study published in Nature ...