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Small fine diamonds lead index higher

The overall polishedprices index returned to growth last week, led by a strong performance by the smaller Fine category diamonds.

Daily Index levels

Level

Daily Change

Monday 03/06

120.3

0.2%

Tuesday  04/06

120.4

0.1%

Wednesday 05/06

120.6

0.1%

Thursday 06/06

120.5

-0.1%

Friday 07/07

120.5

0.0%

Monday 10/06

120.7

0.2%

Weekly Index

The main polishedprices index opened on Monday at 120.7 points, up 0.4% with the previous week’s opening. The overall index is 1.4% above its level of this time last year, and has gained 0.9% since the start of this year.

Of the benchmark categories the largest gain came from the Fine 0.3 carat category, which added 4.9% over the week, while the Fine 0.5 carat range gained 2.7%.

The largest loss came from the Commercial 1.0 carat range which slipped 0.5% 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

120.7

0.4%

1.4%

118.9

04-Jan

121.8

04-Apr

0.9%

                   

1 crt/4gr

Fine

116.0

-0.2%

0.6%

111.6

29-May

124.8

10-Apr

2.7%

 

Commercial

118.7

0.1%

5.4%

112.2

04-Jan

121.8

15-Apr

1.9%

 

Mixed

114.3

1.7%

18.0%

104.7

01-Apr

114.5

04-Feb

3.1%

                   

0.5 crts / 50 pts

Fine

98.0

2.7%

0.3%

92.0

15-May

103.4

25-Apr

1.5%

 

Commercial

102.0

-0.5%

-3.8%

98.8

08-May

107.2

07-Jan

-0.3%

 

Mixed

96.5

0.2%

-1.6%

95.8

05-Feb

99.5

22-Feb

-1.6%

                   

0.3 ctrs/ 30 pts

Fine

99.2

4.9%

-9.7%

89.9

15-May

108.1

29-Jan

-3.6%

 

Commercial

109.8

2.0%

-7.4%

106.1

12-Apr

115.4

07-Jan

0.8%

 

Mixed

119.2

0.4%

-4.5%

113.3

14-Mar

120.1

03-Jan

-1.1%

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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