Green sphene is a dichroic gemstone, which means that it displays two colors, in this case yellow and green. This Sterling silver ring features one set above an oak leaf, a pairing I chose because the green is the same shade as an oak leaf or the moss growing on a tree trunk. In direct sunlight, this gem also gives orange flashes. Green sphenes are absolutely mesmerizing to play with, making this ring perfect for a fidgeter!