A natural vein of dolivine.
Dolivine is a semi-clear green-colored mineral that is sold as a decorative gemstone. Due to its density and natural resistance to weathering, it is also used as a cutting tool or for other industrial purposes. It came to prominence as a gemstone after ImperatorIllyana Messer VI wore a 45 carat dolivine brooch to her niece Astrid’s wedding in 2690. In its natural state, dolivine most often occurs as dark green bands in rocks.