Gold implants in people's eyelids help people with a condition where their eyelids do not close naturally. The extra weight of the gold allows the eyelid to close and the normal muscles in the eyelid keep the eye open. Gold does not corrode and it does not react with a person's tears. The other two gifts, frankincense and myrrh would be a bit harder. Both frankincense and myrrh are the gifts of trees.
Frankincense trees grow on the Somali coast, without soil, out of polished marble rock.
The trees are attached by a thick oval mass of substances resembling a mixture of lime and mortar. Myrrh is more of a bush than a tree. The bushes do not grow more than 9 feet in height. A deep cut is made in the trunk of the tree and below it, a narrow strip of bark is peeled off. After the initial incision has hardened, it is wounded again - deeper.