What is the difference between rusty yellow and peach pink? Dichroism.

A fine oval of dichroic rust and yellow. This oval has a deep pavilion and a shallower crown. It mixes rust and yellow to make peach pink at a distance and is eye clean with excellent crystal. A great flashy gemstone that weighs 2.73 carats.

This is a great oval and I am glad that I put the extra effort into a “supper nova” pavilion that makes  a deep pavilion.  It has a three step crown that is relatively shallow in this stone.  This adds up to having a rather light pastel toned stone, being very open and loaded with color.  Now when I first  glanced at it in its box, I thought it was an peach pink, which is a rather common arrangement out of Africa, but then I read the box and it said rusty yellow.  So I looked closer and realized that the color in this gemstone is not distributed evenly and the stone is actually dichroic.  It is a little hard to see face up because of the excellent mixing of the cut, but when I turned it over, I can see that the ovals ends are redder than the yellow middle of the oval.

So now we have a very personal tourmaline again.  From a distance, for the public, it can pretend to be peach pink, but you know its secret.  Up close and persoal, it is a delightful mixture of rust and  yellow.  It shows offthe colors in a deep cut that is at least eye clean and with great crystal.  It weighs 2.73 carats.


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.
This entry was posted in Etc., Orange, Pink, Yellow and tagged , , , , , , . Bookmark the permalink.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.