In yet another break from building my Polarized Filter Microscope Mount/Stand, I made a paper mount for a gem pic. I took a four inch square piece of note paper, folded the corners in by an inch at 90 degrees which set the surface plane of the paper 1 inch above another flat piece of the same paper, then easy folded the center area and took a crescent shaped bit out with some scissors (I took great effort not to run with them!). This allows me to sit a stone onto the slot and only a minimum of foreign material touches the stone. I also can light up the bottom piece of paper as a lit background by shining a flashlight into that 1 inch gap between the paper pieces. In this image you can see the thin edge of paper to the right, lower side of the jewel and the lit piece of paper below being lit by a different wavelength of white is seen in that triangular opening. This was my first try so I erred in the size opening I made. I used it this time but will try to make a better fit in the future. I will save this one for larger stones (don't want to waste paper)
Oh, the stone and image data - It is a 0.70ct, oval, Portuguese cut, 7x5mm Pink Tourmaline. I wanted the pink of a female Easter bunny dress and had gotten a pink Morganite that was way too pale to show its pink so tried the Tourmaline and am very pleased in the color presentation. The overall, un-spotlighted color can be seen in the upper left quadrant's pink pentagon shaped facet reflection. Its picture is taken at x40 magnification with scope LEDs and bottom lit indirectly (mostly, there is some side direct lighting above and below the mount plane) and from the image top with an LED Flashlight.
Does anyone have a clue to what the vendor meant by Portuguese cut?
Edit: The source location for the Tourmaline is listed simply as India. Sorry I can't be more specific to its collection history. Also I'd like to opine that this mounting method, which allows more light to enter the cut stone and from more angles with minimum shading from the actual holding structure, allows more of the sparkle to emerge into the photo, showing more of the effects of facet reflection.
Edit2: Some email exchanges with Jewelry Television (the stone's vendor) revealed that it was mined in Mozambique and shipped to India for cutting and polishing.
Also, their representative passed on this info about 'Portuguese' cut - Portuguese Cut: There are many variations of the Portuguese cut. It originally referred to round stones with 96 facets on the pavilion and 81 facets on the crown for a total of 176. There are variations with fewer facets but still far more than the 58 of a standard round brilliant typical of diamonds. - So there has been almost twice as much work put into this tiny stone than a similar sized diamond with a 'brilliant' cut. No wonder it sparkles so much.