Given the recent price volatility in the ruby market, it is worth revisiting the ruby price trend again. There are some size/quality combinations that have seen a significant price increase during the 12 month period…
Market TrendsIn 2004, Branko Deljanin, co- authored his first book on the subject, titled Laboratory Created Diamonds (co-authored with Sharrie Woodring). We reviewed it, recommended it, and this handy reference book on synthetic diamonds was formed…
Book ReviewSo, you've always dreamed of owning an authentic Lalique plique jour enameled dragonfly brooch with opal hind wings and eyes of demantoid garnets. In this desire you are not alone. It is classic jewelry at…
News ArchiveAn 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…
Gem NotesA 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…
Gem NotesOne recent technological development is that of rare earth magnets, which have incredible strength and stability, even in small sizes. While commonly nickel plated, these magnets are made of neodymium, iron, and boron (NdFeB) and…
Featured ArticlesThe 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…
Colored Stone MarketAt 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…
Diamond MarketGemstones 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…
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