The IDEX Online Polished Price Report - January 2020

(IDEX Online) - Prices of round diamonds continued to be fairly stable in December, with many categories seeing isolated or limited changes. The changes that occurred in goods below 1.00 carat were mostly positive; 0.30-0.39 cts, D/VVS1-VS2 increased 2-4 percent, 0.90-0.99 cts, G-J / VVS2 increased 1.5-3.5 percent. Items sized 2.00-4.00 carats saw some negative change, with the 2.00-2.99 carat category, LMN / I1 and D / I1-3  seeing downward movement of 2 to 5 percent.

Continuing a trend seen in December, smaller fancies, those below 0.70 carats, saw very little movement. Most of the changes took place in goods sized between 0.70-1.24 carats, with price swings both upwards and downwards. Goods in the 1.00 carat range, HIJ / VVS2-VS1, saw rises of 2-3 percent. 

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

To receive a free copy of the full IDEX Online Diamond Price Report, contact prices@idexonline.com.

Rounds

• 0.18-0.22 ct. no changes

• 0.23-0.29 ct. K / SI1 +6%

• 0.30-0.39 ct. D / VVS1-VS2 +2-4%, I-J / VS1 -3%

• 0.40-0.44 ct. K / VS2-SI1 +3%

• 0.45-0.49 ct. D / VVS1-2 +3-4% and L-M / SI3 -4-5% 

• 0.50-0.69 ct. I / VVS1-2 +3-4% and K / Vs1 and SI1 +2.5-3%

• 0.70-0.79 ct. D / IF +3%, F / VVS2 +1% and H / VVS1 +3%

• 0.80-0.89 ct. No changes

• 0.90-0.99 ct. G-J / VVS2 +2-4% and E / SI2-I1 +2-3%

• 1.00-1.24 ct. E / VVS2 -2.5%, F / VS1 -3% and G / SI1 -3%

• 1.25-1.49 ct. E / VVS1-2 +3%

• 1.50-1.99 ct. L-N / I1 -3-5%

• 2.00-2.99 ct. D / I1-I3 -2-5%, L-N / I1 -3-4% and N / VVS2-VS1 +2-4%

• 3.00-3.99 ct. H-I / VVS1 +2-3%, J-K / VVS1 -3%  and L-M / VVS2-VS1 -1-3%

• 4.00-4.99 ct. F-L / I1 +1-4% and D-E / VS2-SI2 -1-3% and I-J / I2-I3 -3-5% 

• 5.00-5.99 ct. A few negative changes in the medium colors and qualities

Fancy Cuts

• 0.18-0.22 ct. D / SI2 +5%, 

• 0.23-0.29 ct. D / SI1 -4%, D / SI2 +5% and G / VS2 +4%

• 0.30-0.39 ct. H / VVS1 -3% and I / VVS1 +3%

• 0.40-0.44 ct. F / VVS2 -4%, G / IF +3% and G / VS2 -2%

• 0.45-0.49 ct. E / VS2 -3.5%

• 0.50-0.69 ct. F / SI1 and I2 +2-4% and H / VVS2 -1.5%

• 0.70-0.79 ct. D / VS1-2 -3% and F / VVS2-VS1 +3%

• 0.80-0.89 ct. H / VVS1-VVS2 -3% and E / VVS2 and I1 +3%

• 0.90-0.99 ct. D and H / VVS1 -3% 

• 1.00-1.24 ct. I-J / VVS2-VS2 +2-4% and F / VVS2-VS1 -3.5%. 

• 1.25-1.49 ct. H / VVS1 No changes

• 1.50-1.99 ct. G and L / IF -2-3%, D / SI2 +2%

• 2.00-2.99 ct. H-I / IF-VVS1 +3%

• 3.00-3.99 ct. E / VVS2 and SI1 -3% and E / SI3-I2 +3%

• 4.00-4.99 ct. D-E / VS1 -3% and D / VS2 +3%

• 5.00-5.99 ct. G / SI3-I2 -3% and F / VS1-2 +3%