#gemystique
Yellow fibers in Peridot from Pakistan: Part 2
Continuing last week’s post, examining the varying appearance of the hair-fine to acicular yellow fibers sometimes found in Peridot from Pakistan. The difference in thickness and appearance can be examined in the photographs. They may appear in tightly packed groups or as individual thread like fibers that can range from very fine-thick.
Fibers having a similar appearance have been reported from other regions as well. Identified as asbestos fibers, they may be present in Peridot from Vietnam and New Mexico. They can appear as fibrous tufts or as individual fibers.
Peridot from Nevada, USA may also sometimes contain a network of thread like yellowish fibers. Occasionally, they can give the gem a cloudy appearance due to the sheer magnitude of these thin fibers.
Illumination techniques applied: Dark-Field Illumination and Oblique Fiber-Optic Illumination.
Sheikh Fahad Abbas – GIA GG, AJP
Founder & Owner – Gemystique®
