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https://www.pricescope.com/community/threadloom/search?query=user:"John+Pollard"

low carat value high carat value. color. low color value

2019 Rapaport State of the Diamond Industry - Video ...

https://www.pricescope.com/community/threads/2019-rapaport-state-of-the-diamond...

@John Pollard I came across a GIA article whereby a MMD was almost mistaken for a natural at GIA ... [/user] Last edited: Jun 3, 2019. John Pollard, BME BA AS (WSU) AJP (GIA) US Director, Crafted By Infinity www.CraftedByInfinity.com. Reactions: OoohShiny, SandyinAnaheim, PreRaphaelite and 1 other person. Dancing Fire

Unique characteristics in MMD | Page 2 | PriceScope Forum

https://www.pricescope.com/community/threads/unique-characteristics-in-mmd.250194/page-2

@John Pollard, are you able to disclose who this very special manufacturer is and/or which retailer BM/online retailers carries their diamonds?I’d like to help direct my friends who are keen on MMD to the best available. Based on everything I’ve read so far I’m leaning towards HPHT.

Unique characteristics in MMD | PriceScope Forum

https://www.pricescope.com/community/threads/unique-characteristics-in-mmd.250194

Good to see some useful, detailed information being presented to enable informed buyer decisions although one could view the focus on potential negative aspects as dissuading customers from considering MMD generally That is fine, though - there is a position for everyone in the market and it is good that CBI/HPD are setting out their stall clearly

TIC or BIC on the Holloway Scale?! | PriceScope Forum

https://www.pricescope.com/community/threads/tic-or-bic-on-the-holloway-scale.232136

@John Pollard, is there any particular reason why GIA rounds off CA's to the nearest 0.5 degree given that other labs that we PS-ers hold to the same esteem (like AGS, some would also say HRD) plus others that we don't hold to the same esteem (like EGL, GSI and the many other labs that grade much more leniently) seem to be able to provide ...

CBI fire | PriceScope Forum

https://www.pricescope.com/community/threads/cbi-fire.242606

There are multiple SMTB threads with photos and videos that you can find by searching my user name. As to why CBIs exhibit consistent fire/dispersion with minute differences in crown angle and table percentages, I am sure @John Pollard would have a technical and thorough answer for that question.

Help picking diamond | PriceScope Forum

https://www.pricescope.com/community/threads/help-picking-diamond.253109

For instance the other day another user was looking at a stone reported as a 35/40.8 combo but came back as a 34.7/41 combo on the SARIN. The images that came back also were not as good as yours. Still, it was a beautiful stone. ... With grateful acknowledgment to John Pollard, Sergey Sivovolenko, AGSL and GIA Laboratories for valuable ...

DeBeers Forevermark? | PriceScope Forum

https://www.pricescope.com/community/threads/debeers-forevermark.253395

How much the stated propositions are worth to the end-user is up to each individual. John Pollard, BME BA AS (WSU) AJP (GIA) US Director, Crafted By Infinity www.CraftedByInfinity.com. Reactions: clearfading, OoohShiny, diamondseeker2006 and 1 other person. diamondseeker2006

"American Cut - The First 100 Years," by Al Gilbertson, G ...

https://www.pricescope.com/articles/american_cut_first_100_years_al_gilbertson_gg

Many of us know Al Gilbertson as an esteemed cutter, gemologist and innovator. Add “mythbuster” to his titles. Mr. Gilbertson has produced a gem of a book, sure to be a page-turner for enthusiasts of “ideal” diamond cutting origins. “American Cut – The First 100 Years” documents important changes between 1850 and 1960. The book […]

Is an inclusion near girdle sign of damage from setting ...

https://www.pricescope.com/community/threads/is-an-inclusion-near-girdle-sign-of...

First of all, thanks to all contributors. I've been stalking this site for months and have learned a TON. A diamond I'm targeting has an inclusion (or...