Laboratory-Grown Gems

News  |  www.jckonline.com | May 1, 2005

Laboratory-Grown Gems By Gary Roskin, G.G., FGA, Senior Editor -- JCK-Jewelers Circular Keystone, 5/1/2005 >> Questions << Synthetic tanzanite is also known as: A. Blue moissanite B. Blue glass C. Synthetic purple/blue sapphire D. None of the above—there's no such thing as synthetic tanzanite

http://www.jckonline.com/article/CA529243.html

Untitled Page - The Science of Diamonds

RAPAPORT... As a lab-grown diamond still a diamond? Are too many people who want to buy diamonds thrown by the term “synthetic diamond”? Given the efforts of companies that grow diamonds in labs to step up production, and given the breakthroughs they have claimed, the questions are not academic.

http://www.diamonds.net/news/ExportItem.aspx?ArticleID=18653&Action=Print

Tucson 2004: A Gemstone Cornucopia

News  |  www.jckonline.com | Apr 1, 2004

Attendance was up and buyers were buying, reports the American Gem Trade Association (AGTA), host of the most important of the 38 gem and mineral shows held in Tucson during the last week of January and first two weeks of February. That news comes as no surprise to anyone who waited in one of the

http://www.jckonline.com/article/CA407313.html

Sundance Diamonds Offers HPHT Services

News  |  www.jckonline.com | Sep 1, 2003

Sundance Diamonds, a division of U.S. Synthetic (USS), has announced the launch of its high pressure/high temperature (HPHT) diamond-processing service for the diamond industry. U.S. Synthetic is the world's largest manufacturer of synthetic diamond components for use in oil and gas drilling. The

http://www.jckonline.com/article/CA320024.html

AMR Highlights 2002 Diamond Auction Results

News  |  www.jckonline.com | May 1, 2003

The December 2002 edition of Auction Market Resource (AMR), Rego Park, N.Y., features a special section dedicated to certified colored and colorless diamonds sold at auction. The publication includes market trends and gemological information intended for estate and second-hand jewelry dealers and

http://www.jckonline.com/article/CA295699.html

Mined in America

News  |  www.jckonline.com | Feb 1, 2003

Many of the world's finest gems come from the Third World: Mogok ruby from Burma, tanzanite from Tanzania, tsavorite from Kenya. But North America also has treasures to brag about, and, gemologically speaking, that's very reassuring. For example, are you worried about the color-origin of

http://www.jckonline.com/article/CA274864.html

Diamonds

News  |  www.jckonline.com | Oct 1, 2002

Diamond. Adamas, the invincible; the unconquerable. The hardest substance on earth. Ice. Transparent carbon, without color, and without rival. Grade them D, E, or F, and you have a colorless diamond. These are the top grades in the Gemological Institute of America diamond grading scale. (No, there

http://www.jckonline.com/article/CA244806.html

HPHT Heats Up

News  |  www.jckonline.com | Jul 1, 2002

Last November, JCK first reported that gem labs were noticing increasing numbers of undisclosed high-pressure/high-temperature-treated (HPHT) diamonds on the market, both near-colorless and fancy-colored. (See The Heat—and Pressure—Is On, JCK, November 2001, p. 102.) Now the number is growing, and

http://www.jckonline.com/article/CA234075.html

The Heat—and Pressure—Is On By

News  |  www.jckonline.com | Nov 1, 2001

The first reports of high-pressure, high-temperature (HPHT) treatments for diamonds hit the trade like an earthquake. Eventually, HPHT producer Pegasus (now Bellataire) agreed to inscribe its stones and sell them directly to retailers. The industry hoped it had solved all the problems associated

http://www.jckonline.com/article/CA184869.html

The Timepieces of Basel 2001: Colorful, Sparkling Women's Wear

News  |  www.jckonline.com | Jun 1, 2001

Three strong trends stood out in the new watch crop at Basel 2001, trends often converging in the same collection: Many, many more watches designed specifically for women. Strong use of color (including straps and colored gems). Extensive use of diamonds, or a diamond look on watches. This year's

http://www.jckonline.com/article/CA91144.html