Photomicrography: Images from Within
March 5, 2024
Images by Sammantha MacLachlan
"Sammantha Maclachlan FGA DGA FIRV MJVA AJP PJDIP CPAA – JVA Registered Valuer
Winner of the Gordon Ness trophy (gemmology)
Fellow of the Gemmological Association of Great Britain
Diamond diploma from the Gemmological Association of Great Britain
Founder Member of the Jewellery Valuers Association
Fellow of the National Association of Jewellers Institute of Registered Valuers
Committee member of the Scottish Gemmological Association
Senior Accredited Gemologist, Accredited Gemologists Association
GIA Applied Jewelry Professional
Cultured Pearl Specialist
IGI certified diamond grader
Practical Diamond Certificate from Gem-A
Member of the Society of Jewellery Historians
20 years of jewellery industry experience with watches, gemstones and valuations including Asian gold jewellery and fancy coloured diamonds, Sammantha Maclachlan has caught our attention with her skills in photomicrography.
The incredible shots shown here and in the newsletter are not only gemmologically exciting, they are simply wonderful works of art.
There’s nothing left to do except to thank Sammantha for sharing her images, and welcome you to enjoy the page!
Pyrite Cube in Canadian Amethyst.
A perfect cube of pyrite seems to float in this amethyst from Thunder Bay, Canada.
Use of crossed polarising filters enhances the iridescence caused by fractures within the stone.
Field of view approx 2.0 mm.
This inclusion scene is found in an aquamarine from the Ghonde mine in Shigar, Pakistan.
A sea of garnet crystals can be seen in the lower quarter, above this a large group of spessartine garnet crystals form in the direction of the basal plane.
A group of two-phase inclusions can be seen above these and a group of growth tubes appear almost icicle-like in the top of the image.
I hope you enjoy this chaotic scene. I find that every time I look at it I find another interesting inclusion!
From the collection of Sid Tucker.
Surface features of sphene/titanite from Skardu, N.Pakistan
From the collection of Sid Tucker.
Blue Fluorite Growth features on blue fluorite from Colombia.
This is a stack of 52 images taken at 120x zoom.
What may mess with your head a little is that those are concave etch pits
rather than convex pyramid shapes as they appear!
You can see some ... "
https://roskingemnewsreport.com/photomi ... om-within/
