This parcel of Yogo sapphires shows a wide variation in UV

This parcel of Yogo sapphires shows a wide variation in UV

loose yogo sapphires – Alara

a) A plot of Ilmen sapphires within meta-ultramafic rocks (bold

Gemological Characterization of Sapphires from Yogo Gulch, Montana

Development of single-shot frequency-resolved optical gating for

loose yogo sapphires – Alara

Minerals, Free Full-Text

Gemological Characterization of Sapphires from Yogo Gulch, Montana

Accurate Trace Element Reporting in Corundum: Development of

Minerals, Free Full-Text

Yogo Sapphires - What you need to know

Sapphire Gemstone: Colors, Meanings, Prices & Benefits

The Journal of Gemmology, Volume 38