EGP™EmanelleGrace Gemological

Research Center

Ongoing studies, published for scrutiny.

The EGP™ Research Center conducts independent investigations in mineralogy, treatment detection, synthetic identification, and origin analysis — publishing methods and findings openly.

  • EGP-R-2025-07

    E. G. Hamza

    Trace-element mapping of emeralds from Panjshir Valley

    A comparative geochemical study of Afghan schist-hosted emeralds versus Colombian black shale deposits, using LA-ICP-MS reference data.

    Active

  • EGP-R-2025-05

    EGP Laboratory

    Detection benchmarks for lead-glass filled ruby

    Establishing standardised photomicrographic protocols for identifying composite ruby at retail and appraisal level.

    Active

  • EGP-R-2025-02

    E. G. Hamza

    Growth structures in modern hydrothermal synthetic beryl

    Documentation of chevron banding, seed plate remnants, and their diagnostic reliability across contemporary producers.

    Under review

  • EGP-R-2024-11

    EGP Research Center

    Fluorescence signatures of heated versus unheated sapphire

    A systematic UV response study across a controlled sample set of Sri Lankan and Madagascan corundum.

    Published