July by Rowan5171 on DeviantArt (original) (raw)
Birthstone Women of the Year: July Ruby
The information below is from this link:
www.almanac.com/content/july-b…
The ruby gets its red coloring from the presence of the trace element chromium. As a variety of the mineral corundum, rubies range in color from a deep, rich cochineal to a lighter rose red. When exposed to sunlight, the UV rays make the chromium glow!
Ruby gemstones may also have a shade of orange, pink, or purple. The most valued ruby color is “pigeon-blood red”—a bright red stone with a tint of purple. The depth of the red color depends on the amount of chromium present in the stone.