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 ...

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.