Green and bi-color green and copper gem Labradorite are popular and unusual colors for gem
labradorite, often preferred by people who like cooler colored gems rather than warm colors. All-green and dark red are the rarest of the gem labradorite colors and green is more often found in combination with another color. This is an unusual fancy triangle cut to make the most of the combination of colors. It is eye-clean and a flawless gem even under 15x magnification.
Labradorite is an ancient gem, in fact these gems have been discovered in Viking burial mounds in Labrador. It was thought that the sunstone aided in navigation. Labradorite is the State Gem of Oregon, 
where it has been collected by Native Americans for centuries. While found all over the world, feldspar crystals are rarely gem grade. Only Harney County and Lake County Oregon (below), have crystal deposits of gem grade and large enough to facet for jewelry.
It is the copper and iron that that make Oregon Labradorite special. The bright copper platelets gave the name Heliolite, from the Greek helios for sun and lithos for stone. Varying amounts of copper cause the stones to range in color from water clear to yellow, as well as many shades of green, red and pink. Some stones contain from two to four of these colors, and some have pure native copper platelets that cause the stone to sparkle. This effect is called aventurescense or schiller.
