A Colorless Nightmare
Melee diamonds may be the best example of the problem gemologist-appraisers face in this new struggle for gemological truth.
*Free Featured ArticlesMercury Free Mining: An Exquisite Opportunity to Make a Global Difference
The jewelry industry has a chance to make a real difference in the health and quality of life for millions of artisanal gold miners, their families and communities. Metallic mercury is a permanent, potent neurotoxin that is increasingly pervasive in the global environment. We can take action to reverse this trend.
*Free Featured ArticlesGem Focus April 2020: Sphene: A Mineral Emanates Fire with Two Names.
Titanite, as it is known to modern mineralogists for its significant titanium content, was first recognized as a new mineral by the great German chemist Martin Heinrich Klaproth in 1795. Soon after its discovery, in 1801, the wedge-shaped crystals inspired the mineralogist Rene Just Haüy, the name bearer of mineral hauyne, to introduce the name “Sphene” after “sphenos,” meaning wedge in Greek.
*Gem Focus & Market Pulse (Free Subscriber)Lab Grown Diamond Price Index 2nd Quarter 2020 Market Report
Since lab-grown diamonds are now produced by many manufacturers and the cost to produce varies, we find that there is often a greater range of pricing when researching.
Lab-Grown Diamond Price IndexPrice Guides – Friend or Foe?
How convenient it is to use a price guide to retrieve prices for diamonds and colored stones. Merely adding a markup to determine a value seems too easy. Some gurus of valuation theory are emphatic that price guides should be banned. Other experts embrace price guides as a key part of the process.
*Free Featured ArticlesGreenland Ruby
After more than a decade, Greenlandic ruby has entered the market in commercial quantities. The combination of affordable pricing and traceable sourcing meet the needs of the current market climate. The flux healing of the…
*Free Featured ArticlesIdentifying and Valuing Old European Cut Diamonds
Identifying an old European cut diamond may seem simple but there is a set of GIA standards that determine from their perspective whether it is or is not. This set of standards is not widely…
*Free Featured ArticlesValue Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)
In this comprehensive article, the author discusses the value factors of colored gems in five parts. Parts one and two appeared in Gem Market News, January/ February 2016, Volume 35, Issue 1. Parts three and four appeared in Gem…
*Free Featured ArticlesValue Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)
In this comprehensive article, the author discusses the value factors of colored gems in five parts. Parts one and two appeared in Gem Market News, January/February 2016, Volume 35, Issue 1. What follows are parts…
*Free Featured ArticlesValue Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)
In this comprehensive article, the author discusses thevalue factors of colored gems in five parts. This article looks at the first two parts. Future issues of the Gem Market News will continue the discussion, looking…
*Free Featured Articles