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Blue gold is an alloy of gold and both gallium or indium. Sapphires are usually blue. Most of them are made in a freshwater setting -- however wild, saltwater pearls are way more beneficial. Bats, moths, hummingbirds and extra eat nectar, and this is a large part of what attracts these creatures to flowering plants, which have to be pollinated. Do not confuse "species" with "variety." The former is a...