Wow another pink emerald cut.

Pink to pale pink end to end emerald cut This clean bright long ratio emerald cut weighs 1.51 carats. It has a great graded pink color that was probably caused by natural radiation.

This very nice pink emerald cut has its tone level grade smoothly down the length of the gemstone.  The tone gradation,  without a  hue (color) shift could be caused  either by an increase in concentration of manganese in the darker tone areas or the manganese could be in a higher oxidation level.  Mn+3 is a much stronger chromophore (coloring agent) than Mn+2.  The possibility of a higher oxidation level for manganese would probably be caused by natural radiation.  Even without the chemistry this gemstone would make a great ring stone.  It weighs 1.51 carats and is clean with great crystal.  A flasher all the way around.

 

Bruce

About Bruce Fry

I was born in Summit, NJ in 1947 and graduated from Summit High School in 1966. I graduated from the Colorado School of Mines in 1970 and after spending another year in graduate school, I left to see the world of Brazil. After spending some more time discovering myself, I ended up working for the Commonwealth of Pennsylvania for 32 years as an Air Quality Engineer in the Department of Environmental Protection. I retired in 2007 and took up faceting gemstones again after a long hiatus that reached back to my twenties. I had started cutting cabochons when I was 13 and bought my first faceting machine when I was 15, but ran out of money and time until I retired.
My great love in gemology is tourmaline and the collection presented here represents my effort to get as much beauty and variety in the colors of tourmaline as I can. I was particularly lucky in being able to get unheated cuprian tourmaline before copper was discovered in gem grade tourmaline from Mozambique.

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