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Diamond index falls continue

The overall polishedprices index fell to its lowest level since early December 2017, and it has now lost over a third of its value since the peak in August 2011.

Daily Index levels Level Daily Change
Monday 16/09 116.0 -0.1%
Tuesday 17/09 115.8 -0.2%
Wednesday 18/09 115.9 0.1%
Thursday 19/09 116.1 0.2%
Friday 20/09 115.9 -0.2%
Monday 23/09 115.3 -0.5%

Weekly Index

The main polishedprices index opened on Monday at 115.3 points, down 0.5% compared with the previous week’s opening. The overall index is 5.0% below its level of this time last year and has lost 3.6% since the start of this year.

The biggest decline came from the Commercial 0.5 carat range, which slipped 3.6% over the week.

The largest gain came from the Commercial 0.3 carat grouping, which added 2.0% compared to the previous Monday.

Benchmark groupings PolishedPrices Index

   

Current Levels

   

2019  Low

 

2019

High

   
   

 Index Jan 04=100

Change from week ago

Change from year ago

Index

Date

Index

Date

Year to date change

 

Overall

115.3

-0.5%

-5.0%

115.3

23-Sep

121.8

04-Apr

-3.6%

                   

1 crt/4gr

Fine

108.1

-0.6%

-9.3%

107.9

06-Sep

124.8

10-Apr

-4.3%

 

Commercial

111.7

-0.9%

-6.1%

111.3

19-Jul

121.8

15-Apr

-4.1%

 

Mixed

110.9

1.0%

13.1%

104.7

01-Apr

114.5

04-Feb

0.0%

                   

0.5 crts / 50 pts

Fine

89.4

-1.0%

-14.9%

88.4

12-Sep

103.4

25-Apr

-7.4%

 

Commercial

96.0

-3.6%

-12.0%

96.0

23-Sep

107.2

07-Jan

-6.2%

 

Mixed

96.6

0.3%

-0.0%

95.8

05-Feb

99.5

22-Feb

-1.5%

                   

0.3 ctrs/ 30 pts

Fine

88.7

-0.6%

-25.2%

84.6

12-Sep

108.1

29-Jan

-13.8%

 

Commercial

100.0

2.0%

-21.6%

98.0

16-Sep

115.4

07-Jan

-8.3%

 

Mixed

115.8

-0.3%

-8.8%

113.3

14-Mar

120.1

03-Jan

-3.9%

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.

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