Continuity mistake: When the people step off the crashed bus, depending on the shot they're either outside the bus or coming out again. Furthermore, once outside, their positions change randomly depending on the shot.
Continuity mistake: When Joan's bus crashes, the film editing becomes chaotic: suitcases on the roof fall in one shot, then remain in place on the other; the stuff on the ground keeps appearing/disappearing randomly, and Joan's blue suitcase swaps from laying horizontally to diagonally.
Continuity mistake: After Joan's bus crashes, the parrot on the jeep keeps changing positions in every single shot.
Continuity mistake: When the bus crashes, the sign on its roof falls, yet when the angle changes it's back on its place.
Visible crew/equipment: During the opening credits sequence, where Kathleen Turner is at home with her cat, she opens a glass cabinet to take out a bottle of alcohol. Throughout this shot we can see a reflection of the camera man (wearing a red t-shirt) directly in front of her face.
Factual error: None of the "Colombians" speaks with a Colombian accent or uses Colombian slang.
Answer: Any emerald over 1 carat in that beautiful cut and condition would probably go for over 250 million. Real emeralds over 5 carats are rare and the price goes up exponentially after 2 or 3 carats. 305,000 per carat after 5. So yeah that one was probably like 800 or more carats.