Letter Grade 4.0 Point Scale (+/-) A+: 4.0: A: 4.0: A-3.7: B+: 3.3: B: 3.0: B-2.7: C+: 2.3: C: 2.0: C-1.7: D+: 1.3: D: 1.0: D-0.7: F: 0.0
Coral calcium is a salt of calcium derived from fossilized coral reefs (primarily from limestone and coastal deposits).It has been promoted as an alternative, but unsubstantiated, treatment or cure for a number of health conditions.oral calcium is a source of calcium, which is an essential mineral for human life. Coral has a chemical structure that is very similar to the composition of human bone and is sometimes used as material in bone grafts.
The first is your ability to absorb the calcium from the supplement. Studies show that calcium carbonate -- the kind in coral calcium and the most common type of calcium in non-coral supplements -- is well absorbed, notes a 2007 article published by nutritionist Deborah Straub in Nutrition in Clinical Practice..The second concern is cost.he first is your ability to absorb the calcium from the supplement. Studies show that calcium carbonate -- the kind in coral calcium and the most common type of calcium in non-coral supplements -- is well absorbed, notes a 2007 article published by nutritionist Deborah Straub in Nutrition in Clinical Practice..