Distress in the 80 Billion Diamond Market | Intelligence ...
Mar 16, 2016· According to RapNet Diamond Index (RAPI), a respected industry benchmark, measured by the Rapaport Group since 1978, prices of topquality diamonds have dropped by as much as 80 percent in real, inflationadjusted terms over the last 30 years. And while cheaper gems may be good news for consumers, it is not for those working in the sector.