Jewels from the heart: My love is like a red, red...helenite?

Reading over all the Valentine's day posts got me thinking about precious stones. In a previous post, I pointed out a few reasonably-priced gems that were incredibly beautiful. However, Valentine's brings to mind the red end of the spectrum, so it occurred to me that a red-themed jewel post was definitely called for. With that in mind, I picked out a few red gems that are reasonably cheap, extremely eye-catching, and sure to melt the heart of your beloved.

(This assumes, of course, that your beloved likes gemstones and is a fan of red. Otherwise, all bets are off.)