Thanks for the ringing endorsement of my book. Its true we are not
related in any way but after that post I would gladly adopt you.
Good explanation!, let me expand on it a bit. We think of color as
composed of three elements, hue, saturation and tone. Hue is color
as we normally use the word, e.g. greenish blue is a hue. Saturation
is about brightness of the hue. Some hues are bright (vivid) others
dull. Usually (in the culprit is either gray or brown. A
grayish color is a cool dull hue, a brownish hue is a warm dull hue.
Pure hues are vivid though some are more vivid than others. Tone is
simply lightness or darkness, like adding black to a bucket of paint.
The more black the darker it gets, eventually add enough black and
hue and saturation are both snuffed out and you have black, the
absence of color.
Gems have optimal hue/saturation/tone because each color has an
optimal hue/saturation/tone. I go into this in detail in my book.
For anyone interested you can read sample chapters at
http://www.secretsofthegemtrade.com Also, a review by Charles
Lewton Brain can be found on Orchid
All this is important to jewelers because we are "jewelers" and
presumably we have a passion. On the more practical side, the
ability to spot a particularly fine gem in a parcel on offer will
often make the difference between making a good profit on a piece
and just getting your labor and material costs back. The fact is:
"You can earn a living making jewelry, you make money selling
Watch for my new book: Secrets Of The Gem Trade:
Visit R. W. Wise, Goldsmith's online gallery: