Are resurrection "Save Me" rewards all equally likely?

OK, after not getting a response, I did a small study and log the number of times I got various rewards over some 50 resurrections:

• 9 times 125 fewest coins
• 7 times 250 more coins in a bag
• 5 times 625 chest of coins
• 7 times 1250 most coins with "X" symbol
• 6 times 50 seconds of coin magnet
• 7 times 50 seconds of shield
• 9 times 1250 meters boost
• 0 times 8 gems

From this data, not a huge amount, but there was not a single gem reward. The others appear about all the same likelihood, more or less. The reason I asked this question was because after the October or November update, it seemed like I wasn't getting the gem reward as often as in earlier versions and my suspicions seem to be confirmed.