Comparatively, Burmese rubies, some of the most popular on the market, are a mere 25 million years old. Rubies are the most highly valued gemstones after diamonds and often sell for more per carat.

Gemstones, including rubies ... an emerald from Colombia is worth more than an emerald from Zambia, just like a Burmese ruby is valued higher than one from Mozambique. While it may be possible ...