Mining Journal - Field Report #847 Location: Ilakaka District, Madagascar
Date: March 15, 2024
Prospecting Notes: Hand-selected rough crystal from alluvial deposit
Specimen Documentation: Initial field assessment revealed promising 4.8ct rough material with exceptional clarity and deep cornflower blue saturation. No visible inclusions under 10x field loupe. Crystal structure indicated premium cutting potential.
Mine Site Log: Extracted from secondary deposit approximately 2.3 meters below surface. Surrounding matrix contained typical Madagascar corundum indicators - rutile needles and feldspar fragments. GPS coordinates logged for future reference.
Field Collection Analysis: Raw material displayed classic unheated characteristics - no thermal stress fractures, natural color zoning intact. Initial weight assessment suggested 45-50% yield potential for precision cutting.
Rough Material Processing: Custom octagon cut executed to maximize color return and minimize material loss. Final yield: 2.25ct finished gem, representing 47% recovery rate from original rough.
Field Study Conclusion: Exceptional specimen demonstrating Madagascar's premier corundum quality. Natural, unheated blue sapphire suitable for investment-grade applications. Recommended for high-end jewelry or collection documentation.
Site Documentation: Stored in climate-controlled environment pending certification and final documentation.