Emeralds are extremely rare stones and have thereby become very expensive, especially in the last decade. The price of an emerald multiplies as per its size. Generally, emeralds are mined in Columbia and the range of prices is $1,200 - $2,000 per carat. This definitely depends on many other factors such as size, color, tone, clarity, cutting and enhancement of the emerald. The most popular emerald is the size of 1.23 carat and costs approximately $1,850. Emeralds are considered to be stones for investment as the appreciation in their prices are amazing due to their rarity.