Female Shardbearer

The female Shardbearer in the first of Dalinar's visions is described as holding something bright: a topaz entwined with a heliodor, both set into a fine metal framework, each stone as big as a man's hand.

This series isn't chapter-gated yet, so we can't hide individual spoilers. To keep you safe, everything past the intro stays hidden. If you've finished it, “Show everything” above reveals it all.