Robindira Unsworth makes gorgeous jewelry. Lately I've been into her Stackable Gem Rings ($238). They're so pretty. One slight problem — with all this holiday shopping, I don't have spare change to spend on them.
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These Stella & Dot Stackable Rings ($39 each, $117 total) may not be made of semiprecious stones, but they still look good. They have the three components, and I like the mix of colors. Perfection.