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Polished index volatile in quiet trading

Last week the overall polishedprices index saw much more volatile movements than has been the norm in recent months.

Daily Index levels

Level

Daily Change

Monday 31/07

116.7

0.3%

Tuesday  01/08

116.4

-0.2%

Wednesday 02/08

117.0

0.5%

Thursday 03/08

116.3

-0.6%

Friday 04/08

116.6

0.2%

Monday 07/08

117.4

0.7%

Weekly Index

The main polishedprices index opened up 0.6% compared to the previous Monday at 117.4 points. The overall index is 2.2% lower than this time last year and is level with the start of the year.

Of the benchmark categories, all of the 0.5 carat and 0.3 carat ranges were in negative territory over the past week, with 0.5 carat Commercial recording the largest deficit of 3.1%.

Strongest performer was the 1.0 carat Commercial range, which gained 2.0% compared to the previous Monday.

Benchmark groupings PolishedPrices Index

   

Current Levels

   

2017 Low

 

2017 High

   
   

 Index Jan 04=100

Change from week ago

Change from year ago

Index

Date

Index

Date

 Year to date change

 

Overall

117.4

0.6%

-2.2%

115.7

24-Mar

118.7

03-Jan

0.0%

                   

1 crt/4gr

Fine

113.3

0.7%

-5.0%

105.8

27-Mar

118.9

26-May

4.8%

 

Commercial

114.0

2.0%

0.6%

106.3

12-May

114.8

04-Jul

3.7%

 

Mixed

95.6

-0.2%

-4.3%

93.4

06-Apr

97.9

10-Jul

0.9%

                   

0.5 crts / 50 pts

Fine

99.2

-0.7%

-11.9%

95.6

26-Jul

113.2

14-Mar

-5.7%

 

Commercial

99.4

-3.1%

-3.5%

97.0

03-Aug

107.0

03-Jan

-3.2%

 

Mixed

97.6

-0.2%

-2.1%

97.6

07-Aug

100.8

11-Jul

-0.8%

                   

0.3 ctrs/ 30 pts

Fine

103.5

-1.4%

4.9%

96.5

21-Jun

108.8

10-Jul

4.6%

 

Commercial

117.1

-1.0%

8.0%

105.6

12-Jan

118.3

31-Jul

8.6%

 

Mixed

125.0

-0.4%

4.3%

119.0

24-Jan

125.5

26-Jul

5.2%

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.