According to the most recent polished diamond index, published by polishedprices, the overall index edged upwards. On Monday August 6, the polishedprices index stood at 119.6; one week later, on Monday August 13, the polishedprices index stood at 119.9.

According to the website, the polishedprices index opened this Monday at 119.9 points – up 0.3% compared with the previous week. The overall index is 2.1% above its level of this time last year, and has gained 3.4% since the start of the year. The strongest category over the past week came came from “the better quality 1.0 carat ranges, with Fine and Commercial gaining 2.5% and 2.0% respectively”. The worst performing category was the Commercial 0.5 carat range, which slipped 1.5%, compared to the previous Monday.

Polishedprices, which went live in 2002, provides wholesale transaction-based polished diamond prices, indices, independent market reporting and opinions.

With many offices closed for the summer holidays, the overall polishedprices index edged upwards towards the end of the week.

Daily Index levels Level Daily Change
Monday 06/08 119.6 0.6%
Tuesday  07/08 119.8 0.2%
Wednesday 08/08 119.6 -0.2%
Thursday 09/08 119.4 -0.1%
Friday 10/08 119.3 -0.1%
Monday 13/08 119.9 0.5%

Weekly Index

The main polishedprices index opened on Monday at 119.9 points, up 0.3% compared with the previous week. The overall index is 2.1% above its level of this time last year, and has gained 3.4% since the start of the year.

The main strength amongst the benchmark categories over the past week came from the better quality 1.0 carat ranges, with Fine and Commercial gaining 2.5% and 2.0% respectively.

The worst performer was the Commercial 0.5 carat range, which slipped 1.5%, compared to the previous Monday.

Benchmark groupings PolishedPrices Index

Current Levels 2018 Low 2018 High
 Index Jan 04=100 Change from week ago Change from year ago Index Date Index Date  Year to date change
Overall 119.9 0.3% 2.1% 115.9 12-Jan 121.5 02-Jul 3.4%
1 crt/4gr Fine 116.0 2.5% 2.4% 111.8 02-Aug 126.8 02-Jul 2.2%
Commercial 115.4 2.0% 1.2% 109.5 02-Mar 120.1 25-Jul 3.9%
Mixed 94.8 0.0% -0.9% 94.3 05-Feb 98.1 27-Mar -1.1%
0.5 crts / 50 pts Fine 101.9 0.6% 2.7% 92.8 02-Aug 105.2 25-Jun 6.5%
Commercial 104.5 -1.5% 5.1% 99.6 02-Jan 112.0 17-May 6.6%
Mixed 97.0 -0.1% -0.6% 96.2 02-Jan 100.5 26-Apr 0.5%
0.3 ctrs/ 30 pts Fine 115.6 1.2% 11.7% 98.8 09-Feb 117.8 16-Jul 17.5%
Commercial 124.1 -0.6% 6.0% 110.3 04-Jan 125.4 13-Mar 13.9%
Mixed 125.8 -0.1% 0.6% 122.0 12-Jan 126.4 14-May 2.7%

The definitions of our groupings are:

Fine:            Goods better than I colour and VS2 and above

Commercial:  K SI3 and above, excluding the Fine category, and

Mixed:                    The rest down to M I3

The weightings used in the calculation of these indices are chosen to reflect world production. Please contact us if you would like to see details of the weightings used, or would like to see the information grouped differently.

LEAVE A REPLY

Please enter your comment!
Please enter your name here