What can I craft with Rubies and Sapphires?

Does anyone know?
So far our fissure/uw group has found several rubies and sapphires. They seem to be much rarer than ectoplasm blobs and obsidian shards though. We've found over 200 ectos and shards combined; during that time we've only found 3 rubies and 4 sapphires.

I hope you get an answer because I haven't seen any crafter ask for them either and I'd love to know what they're for!

I don't think there is currently anything you can craft with them. Just save them, and when there is something to craft with them, you will be in the lead.

I'm pretty sure they're for a collector or to sell to merchants for a bunch of money...