Rapaport reported that in December, polished diamond trading saw a jump due to “last-minute holiday demand.” However, for the entirety of 2013, polished diamond prices fell on the back of slower economic growth in India and China.
As quoted in the market news:
In December, the RapNet Diamond Index (RAPI™) for certified 1-carat polished diamonds rose 0.2 percent, while RAPI for smaller certified goods increased at a faster pace, continuing the trend witnessed throughout the year.
For the year 2013, RAPI for certified 1-carat polished diamonds fell 4.5 percent. RAPI for 0.30-carat diamonds rose 10.1 percent, while RAPI for 0.50-carat diamonds declined by 0.7 percent. RAPI for 3-carat diamonds dropped 4 percent in 2013.