Rainbow Crystals, Collect All Seven?
"rose-like sapphire"... I'm pretty sure this has nothing to do with what you're actually referencing, but whatever. Most people are probably aware that rubies and sapphires are the same mineral (the general name is "corundum"). But did you know that there are strict rules on what can be sold as ruby? Gem-quality corundum that is insufficiently red is called pink or rose sapphire.
And unless some pieces of that miscellaneous jewelry are Moxen (bare link because Gatherer uses square brackets in its search form: http://gatherer.wizards.com/Pages/Searc ... [Mox]&set=+![%22Unglued%22]+![%22Unhinged%22]) (it's almost a pity that there are so many pearls when A.C. is so much more Blue/Red than White), I don't have any other guesses (or relevant trivia).
"rose-like sapphire"... I'm pretty sure this has nothing to do with what you're actually referencing, but whatever. Most people are probably aware that rubies and sapphires are the same mineral (the general name is "corundum"). But did you know that there are strict rules on what can be sold as ruby? Gem-quality corundum that is insufficiently red is called pink or rose sapphire.
And unless some pieces of that miscellaneous jewelry are Moxen (bare link because Gatherer uses square brackets in its search form: http://gatherer.wizards.com/Pages/Searc ... [Mox]&set=+![%22Unglued%22]+![%22Unhinged%22]) (it's almost a pity that there are so many pearls when A.C. is so much more Blue/Red than White), I don't have any other guesses (or relevant trivia).