News Archive

Webbed Opal

An opal and diamond ring was submitted for a damage report pursuant to an insurance claim. The opal cabochon measured approximately 16.5 x 10.8 x 4.7mm. Standard gemological testing confirmed the identity of the opal…

A Classic (Synthetic) Example

A ladys platinum ring containing a blue center gemstone surrounded by old European cut diamonds was submitted by a jeweler for identification of the center stone. Standard gemological testing confirmed the stone was doubly refractive…

Colored Stone Market

The colored stone market remains volatile. Gemstone prices continue to increase as the U.S. dollar continues it slide against other major world cur- rencies. This is frustrating dealers who are seeing their costs climb at…

Diamonds in Brief

At the Tucson gem show in February, I spoke of the sad chapters of bankruptcies that now plague the diamond industry. Back then we knew of filings from the previous year that included Fabrikant, Fortunoff…

Gemstones and Light: The Science

Gemstones can look dramatically different when viewed in different lighting conditions. The perceived color can make a huge difference when grading and pricing these gems. Understanding what light sources to use first requires a knowledge…

Market Trends: White Sapphire

Like most sapphire varieties, white sapphire has experienced increased demand and higher prices during the past few years. Dealers in Sri Lanka report that material is being heated to produce the colorless material now that…

Diamonds in Brief

Soft holiday sales will not influence suppliers and diamond prices are expected to continue to rise. Store closings and bankruptcies are rising. Greater return memo hurting the industry. More sightholders…

Unusual Diamond Crystal

An old European cut diamond in a ring setting came in for an appraisal. The approximate measurements were 5.00 x 4.90 x 2.59 with an estimated weight of .39 cts. At first observation, the diamond…