An interesting tuft of light blue needles was recently observed in a polished modified cube…
Recently the authors examined a 4.8 cm tall pale blue sapphire crystal (figure 1) that…
Numerous gem materials have been designated “trapiche” in the trade and in various publications. They…
Recently examined in the Carlsbad laboratory was a 26.72 ct transparent violet modified cushion mixed-cut…
A white, non-nacreous baroque pearl weighing 15.53 ct and measuring 19.54 × 13.26 × 11.57 mm (figure 1) was recently submitted to GIA’s Carlsbad laboratory for examination. Information from previously observed non-nacreous…
EDWARD ASSCHER, President, World Diamond Council (WDC), shares his personal views and insights about the…