Country origin record

Tanzania

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

Spinel

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[2]
Current production

Tanzanite

Published locality records document this gemstone within the country.

Current production verified in at least one locality

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

Evidence[3]
Documented occurrence

Alexandrite

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]
    Aaron C. Palke, Ziyin Sun, Nathan D. Renfro, and Shane F. McClure. Geographic Origin Determination of Alexandrite.

    Gems & Gemology · 2019

    View authoritative source
  2. [2]
    Nathan Renfro, John I. Koivula, Shane F. McClure, Kevin Schumacher, and James E. Shigley. Micro-Features of Spinel.

    Gems & Gemology · 2021

    View authoritative source
  3. [3]
    Economic Survey 2024.

    United Republic of Tanzania, Ministry of Finance · 2025

    View authoritative source