Then, what are 5e diamonds worth?
Diamonds are among the most valuable of gemstones, valued at around 200 gp per carat. ↑ Player's Handbook (5e) (2014), p. 221.
Beside above, how does revivify work? Revivify. You touch a creature that has died within the last minute. That creature returns to life with 1 hit point. This spell can't return to life a creature that has died of old age, nor can it restore any missing body parts.
Herein, can you fail revivify?
But if the body has began decomposing, then it should return with levels of Exhaustion, that take upto several days to recover from. If the body would have been destroyed, such as missing a head, then Revivify automatically fails.
Do Druids get revivify?
No, a Circle of the Moon Druid cannot access Revivify from their spell list. The Circle of the Moon Druid does not gain any additional spells from their circle, and Revivify is not on the Druid spell list. Some Magic Items do give access to spells from other spell lists.