The IDEX Online Polished Price Report – January 2019

(IDEX Online News) – Price changes in round and fancy shape diamonds in December were relatively rare. In round goods, stones of 0.80-0.89 carats in E-G, I3, fell 4%; in 2.00-2.99 carat diamonds D, I1-I3, of 2-4%; and in a range of colors and clarities in 3.00-3.99 carats and 4.00-4.99 carat stones. There were rises in a range of colors and clarities in 0.30-0.39 carat stones; in 0.45-0.49 carats, D, VS2-SI2, of 2-3%; and in 1.00-1.24 carats, E-F, VS1-VS2, 1-3%.

Fancy diamonds saw sharp declines in the 0.18-0.22 carat category, F-J, IF-VVS1 of 4-5%; in 1.00-1.24 carat diamonds, D-I, SI2, of 2-3%. Meanwhile, there were increases in 1.00-1.24 carat stones of 2-3% in IF, E-H colors; and in 1.50-1.99 carat stones, E-G, VS1-SI2, of 1-3%.

The following are some of the changes in this week's IDEX Online Diamond Price Report.

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Rounds

• 0.18-0.22 cts I / IF -3%, I / SI +5%
• 0.23-0.29 cts K / VVS1-VVS2 +4%
• 0.30-0.39 cts H-J / IF+2%
• 0.40-0.44 cts G / SI1 -2%, E / VVS1-VVS2 +3%
• 0.45-0.49 cts D / VS2 -2%, D / VS2-SI2 +2-3%
• 0.50-0.69 cts F-G / VS2-SI1 +2-3%
• 0.70-0.79 cts G-H / VVS1 -2-3%, D-E / SI2-SI3 +1-3%
• 0.80-0.89 cts E-G / I3 -4%, D / VS1 +3%
• 0.90-0.99 cts K / SI2 -3%, H / IF-VVS2 +2-3%
• 1.00-1.24 cts H / VVS1-VVS2 -2%, E-F / VS1-VS2 +1-3%
• 1.25-1.49 cts G / SI2 +3%
• 1.50-1.99 cts D / SI2 -3%, F / IF +3%
• 2.00-2.99 cts L / IF-VVS2 -2%, H / SI2 +3%
• 3 cts L / VVS1-VS1 -2-3%, K / VS2 +6%
• 4 cts L-M / I3 -5%, H / VS2 +6%
• 5 cts N / SI1+3%

Fancy Cuts

• 0.18-0.22 cts F-J / IF-VVS2 -4-5%
• 0.23-0.29 cts No changes
• 0.30-0.39 cts H / IF -2%, G / IF +2%
• 0.40-0.44 cts E / VS2 -3%, G / VS2 +2%
• 0.45-0.49 cts G / SI2 -3%, J / SI1 +3%
• 0.50-0.69 cts I / VVS1 -1%
• 0.70-0.79 cts H-I / IF-VVS1 -2-3%, F / VVS2-VS1 +3%
• 0.80-0.89 cts D-G / I1 -2-6%, H / VVS1 +3%
• 0.90-0.99 cts J / VVS2 -2%, G / SI2-SI3 +2%
• 1.00-1.24 cts D-G / SI2 -3%, E-H / IF +2-3%
• 1.25-1.49 cts E-F / IF -2-3%, I-J / I1 +3%
• 1.50-1.99 cts F / IF -3%, E-G / VS1-SI1 +1-3%
• 2 cts K-L / SI1 -2-3%, E-G / SI1 +3%
• 3 cts J-K / VS2 +2-3%
• 4 cts N / I1 -4%
• 5 cts M / I2 -5%, G / IF +3%