W022 / Arizona

Round Mountain fire agate

Locality-linked iridescent chalcedony

Record the brown body material and whether color changes with viewing angle. A colorful photograph alone cannot distinguish a treated imitation.

← Western Lapidary Materials
Verified reference photograph pending

What it is

Locality-linked iridescent chalcedony

What to look for

Record the brown body material and whether color changes with viewing angle. A colorful photograph alone cannot distinguish a treated imitation.

At the cutting bench

Inspect the actual piece for fractures, voids and cutting orientation. Deposit-specific yield and polish data are UNKNOWN.

Under the loupe

Keep other Arizona fire-agate localities separate; an optical effect does not identify a mountain.

Source & collecting access

Official recreational designation does not remove private-boundary, quantity or commercial-use restrictions. Verify current conditions before collecting.

Status checked 2026-10-01

The market notebook

UNKNOWN — no verified completed-sales sample sufficient for a range

Market researched 2026-10-01

Open the field notes

Color comparison tags

Brown/Tan, Multicolor

Geology & evidence limits

The BLM recognizes the Round Mountain Rockhound Area near Duncan. Broader Arizona fire-agate formation needs a specimen-specific technical source.

Collecting & trade history

Official recreational designation does not remove private-boundary, quantity or commercial-use restrictions. Verify current conditions before collecting.

Reading old-stock material

Preserve the estate label, wrapping, purchase record and associated pieces. Old-stock status alone does not authenticate origin or imply a premium.

What we know—and what we don’t

Visual resemblance is a comparison clue, not proof of material identity, locality or documented provenance. Keep source labels and estate records separate from your visual assessment.

C&C Reference Collection

Reference photograph pending. Do not substitute an unlicensed dealer image or a similar-looking specimen of uncertain identity.

Sources & Further Reading
  1. BLM: Round Mountain Rockhound Area

    Official recreation designation; no mineral valuation

  2. USGS historical chalcedony industry account

    1995; indexed passages reviewed, full retrieval unavailable

Cut and polish with appropriate wet methods and silica-dust controls. Historic directions and mine names are not current permission to collect.