"I'm not an expert in gemology, I recall they call it when they are mining gemstones a strain." And he'd certainly never met an anthropomorphized gemstone! "So is it sort of like how various humans have difference races then? Skin-tone color and the like?" Or were they all completely different composites. It could boggle the mind if he let it, he suspected.

He found he much preferred her grinning at him rather than snarling so Kurt allowed an answering smile to curl up the corners of his lips in a conspiratorial looking smirk. "Might as well make use of your time. Besides, fortune favors the bold, right?"