Map: Unearth Rare, Glowing, Rainbow Stones South Of Twin Falls ID

It's rockhounding season once again in southern Idaho. Of the dozens of different types of gemstones known to be scattered throughout the state, there's one so unique that it's not only rainbow-colored but also glows under certain lighting, and it is known to pepper the desert landscape 40 miles south of Twin Falls.

Late April is a great time to get out in Idaho to search for rare stones, and the state's central and southern regions are abundant due to past volcanic activity. Certain rocks and mineral stones, when polished, are valuable and highly sought-after collector's pieces in the Gem State, and can fetch some pretty good money if they are unearthed in good condition.

The more flawless the stone, the higher the demand.

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A Region 40 Miles Outside Twin Falls, ID, Is Known To Have Rainbow Chalcedony

Forty-four miles south of Twin Falls, off Highway 93 near the Nevada border, is a section of desert accessible by automobile, where it's known that there is a good deal of chalcedony, which was formed by previous volcanic activity in the region. These stones contain fluorescent qualities that make them glow under light.

READ MORE: MAP: Hotspots To Find Opals, Agates In Southern Idaho

Chalcedony is unique in that it comes in several different colors, including pink, blue, and green, and is made up of mainly silica and water, according to Rock Chasing.

Rabbit Spring is a region between Contact, Nevada, and Twin Falls, Idaho, where the impressive stones are known to lie in abundance. There are multiple sections off the highway where you can safely park on public land to seek out the stone.