Nevada · site land status

Virgin Valley opal: land status

Updated October 16, 2026. Seasons from operator websites; verify before you drive.

Open sagebrush hills under a clear sky in Sheldon National Wildlife Refuge, Nevada — Sheldon National Wildlife Refuge, which surrounds Virgin Valley. Refuge rules are not BLM rules. Photo: Ken Lund, CC BY-SA 2.0, via Wikimedia Commons

Virgin Valley, near Denio in Humboldt County, is the home of Nevada's official precious gemstone, the black fire opal (NRS 235.100). It is not BLM land. It's inside Sheldon National Wildlife Refuge, and the opal ground is claimed.

The land, in three layers

Sheldon National Wildlife Refuge (U.S. Fish and Wildlife Service). Refuge rules allow surface rock collecting by hand only, up to 7 lb per person per day, with no tools and no digging. Artifacts are off limits. Refuge regulations (50 CFR 27.61) bar removing property except as allowed.
The Virgin Valley Mining District. Per the refuge brochure, the 7-lb rule doesn't apply inside the mining district, which is covered by claims, some of them patented. Without the owner's permission you can't collect there at all.
Fee-dig mines. The refuge brochure says two patented mines offer fee digging. In practice, paying a fee dig is how you get to dig for opal here.

2026 fee-dig seasons (from operator websites)

Operation	2026 season	Notes
Royal Peacock Opal Mines (royalpeacock.com)	May 1 – Oct. 18, 2026	Bank and tailings digging; on-site camping
Rainbow Ridge Opal Mine (nevadaopal.com)	May 1 – Sept. 27, 2026	Tailings and reserved loads; check closed days
Bonanza Opal Mines	Weekends, Memorial Day–Labor Day	Tailings fee dig

We don't list prices; they change every season. Which mines are patented and which are on unpatented claims: verify with the operator.

Practical notes

Fresh “wet” opal can craze as it dries. The operators explain how to keep it in water.
Fee-dig rules (tools, hours, what you keep) are set by the operator. Outside the operator's boundary you're back under refuge rules: 7 lb, by hand, surface only.
Opalized wood and fossils on refuge ground: 43 CFR 49.800 doesn't allow casual fossil collecting on Fish and Wildlife Service land. Ask the refuge.
It's remote. Carry water, fuel and a full-size spare.

Sources: U.S. Fish and Wildlife Service, Sheldon NWR (rules and refuge brochure); 50 CFR 27.61; NRS 235.100; Royal Peacock; Rainbow Ridge; Bonanza Opal Mines.

What Virgin Valley opal looks like

Precious opal from Virgin Valley, Nevada, showing green, blue and orange play of color — Precious opal from the Virgin Valley Formation. Museum specimen. Photo: James St. John, CC BY 2.0, via Wikimedia Commons

A chunk of opal-replaced fossil wood from Virgin Valley with visible wood grain and color flashes — Fossil wood replaced by precious opal, Virgin Valley. Most Virgin Valley opal is opalized wood like this. Photo: James St. John, CC BY 2.0, via Wikimedia Commons

A piece of wood opal from Virgin Valley, Nevada, with play of color — Wood opal from the Virgin Valley district, Humboldt County. Photo: Rob Lavinsky, iRocks.com, CC BY-SA 3.0, via Wikimedia Commons

Informational only — not legal advice. Rules, boundaries and seasons change. Confirm with the managing agency for the exact parcel before you collect. Last verified October 16, 2026.

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