Country origin record

United States

Country record supporting sourced Batch 1 gemstone locations.

Evidence statusPublished & sourcedLast reviewed August 17, 2026
OverviewGem relationshipsSources

Evidence-backed overview

A country in the gemstone graph

Country record supporting sourced Batch 1 gemstone locations.

Bidirectional relationships

Documented gemstones

Occurrence and production are separate claims. A production label is date-bounded and does not guarantee quality, origin determination, or market value.

Documented occurrence

Sapphire

Published locality records document this gemstone within the country.

Production not assessed

Open the individual locality record for the dated production evidence and scope.

Evidence[1]

Within this country

Published places

Evidence ledger

Sources & verification

Sources are deduplicated across the geographic record. Current-production claims receive explicit review dates; a map point never substitutes for geological or production evidence.

  1. [1]
    Nathan D. Renfro, John I. Koivula, Jonathan Muyal, Shane F. McClure, Kevin Schumacher, and James E. Shigley. Chart: Inclusions in Natural, Synthetic, and Treated Sapphire.

    Gems & Gemology · 2017

    View authoritative source