Different hybrids from same jewel combos crafting

Different hybrids from same jewel combos crafting

Awaiting my first crafting product and I have a few questions: Several of the combined jewels listed in the store are from the same combination of "parent" jewels. Can you only *buy* the "special" ones (like mystic coral, celestial valentine, etc), or do they less-commonly get formed by regular crafting? Does it matter which is chosen first? Of the "two columns" in the crafter laboratory, is "ruby/diamond" the same as "diamond/ruby"? Also, if you sell a combo jewel you crafted, do you get the value it costs to buy it? (Golden Ruby costs 50 Gold; if you craft and sell one, do you get 50 Gold?) Lastly, how do hybrid crafting pairs work from tertiary combinations; that is, if you take a 2-way combo jewel and mix it with a third, does it come out to be something different, or is it still one of the main combinations? For example, if I take a "red diamond" (ruby+diamond) and add sapphire, is it *either* ruby/sapphire or diamond/sapphire, or something different?