#gemystique
Topaz Inclusions: Part 3
Multiple secondary fluid inclusions that form during fracture healing or cleavage are usually found along the basal cleavage planes and even on undulating fractures in Topaz. These syngenetic healed/partially healed fissures can be both dry and may also contain fluid syngenetic phases. Photomicrographs posted here demonstrate how these breaks and fissures react under fiber-optic illumination at different angles.
Cleavages, open parting planes, fractures and breaks etc. in other gemstones, both internal and surface reaching, also often react in a similar manner when observed under this form of lighting and may display soft to vivid iridescent interference colors.
Sheikh Fahad Abbas – GIA GG, AJP
Founder & Owner – Gemystique®
