They are part of a collection of more than 20 loose emeralds and 13 pieces of emerald jewelry.
The highlight of the collection is one particular group of stunning sparklers.
A treasure hunter found them in 1985 in a shipwreck off the coast of Florida. The ship had sunk in 1622.
Guernsey's auction house is putting the collection up for sale next month in New York.
If you happen to have a few million bucks lying around, it could be all yours. According to CNN, the collection is expected to rake in millions at auction.