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Excerpts from: Colored Stone
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[328] Gems and Technology - Vision Underground
The most widely-used gemstone exploration techniques today are ground-penetrating radar, known as GPR; trace-element analysis, which involves seeking signature elements as clues to where gems may lie; and use of a device called a 'terra thumper,' which identifies differences in the structure of the host rock through seismic analysis. GPR has proven useful in providing subsurface mapping of potential gem-bearing pockets, or 'vugs,' but the readings can be confused by moisture in the ground, and they can't separate gem-bearing pockets from the non-gem-bearing ones.... (2002)
Complete Story

Show me more articles from: [Colored Stone]|[Martin Stone]
Releated Categories:[Gemology]
ISBN: B000060MIL

 

[365] Golden Pearl – Anxiety Fades, Questions Linger
When the first warnings about color enhancement of golden South Sea pearls came out five years ago, fear struck the South Sea pearl industry. Some of the new enhancement methods for golden pearls were nearly undetectable, leaving dealers and retailers guessing how many pearls on the market were treated and wondering whether golden pearls were going to be the gem world's next disclosure scandal.... (2003)
Complete Story

Show me more articles from: [Colored Stone]|[Suzanne Wade]
Releated Categories:[GemBiz]|[Pearls]
ISBN: B000060MIL

 

[375] How much of a difference does cut make in a gem's value?
Imagine, if you will, two colored stones. Both exhibit good color. Both are relatively inclusion free. Both tip the scale at about the same weight. But one was cut better, and it's simply more beautiful. Should you pay a premium price for it? Conventional wisdom holds that the answer is yes. Obtaining a good cut usually means greater weight loss in cutting and higher pay for a more skilled cutter, expenses which can only be recovered through a higher price or a lower profit margin. In theory, the market should be willing to pay a premium for the beauty of a better cut.... (2002)
Complete Story

Show me more articles from: [Colored Stone]|[Suzanne Wade]
Releated Categories:[GemBiz]
ISBN: B000060MIL

 

[503] In The Pink - Retail sales are back on track, but with a twist.
If we needed more proof that our society is obsessed with celebrity style, we have only to look at the spectacular success of pink gemstones in retail stores this year. Last year was the year of pink in clothing and accessories, from Hollywood red carpets to Milan runways. That demand extended to gemstone jewelry, according to the 2004 survey of retail jewelers conducted by Colored Stone. Fancy sapphire, including pink, was the second best-selling stone last year, say the nation's retailers.... (2005)
Complete Story

Show me more articles from: [Colored Stone]|[Marlene A. Prost]
Releated Categories:[GemBiz]
ISBN: B000060MIL

 

[364] It doesn't get much better than concave faceting
How does concave faceting create so much more brilliance than regular flat faceting? Imagine a typical flat, square mirror, Now push the top and bottom closer together so that the reflective side curves toward you. Than take the left and right edges and curve them away from you so that the whole thing is slightly cylindrical.... (2000)
Complete Story

Show me more articles from: [Colored Stone]|[Suzanne Wade]
Releated Categories:[GemBiz]
ISBN: B000060MIL

 

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