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Diamond index drifts down

The overall polishedprices diamond index drifted lower throughout last week.

Daily Index levels

Level

Daily Change

Monday 01/10

121.4

0.6%

Tuesday  02/10

121.3

-0.1%

Wednesday 03/10

121.3

0.0%

Thursday 04/10

121.1

-0.2%

Friday 05/10

120.9

-0.2%

Monday 08/10

121.2

0.3%

Weekly Index

The main polishedprices index opened on Monday at 121.2 points, down 0.2% compared to the previous week. The overall index is 5.2% above its level of this time last year, and up 4.5% since the start of the year.

The main weakness came from the 0.3 carat ranges, with all categories in negative territory. Fine Commercial and Mixed ranges fell 6.6%, 3.9%, and 1.6% respectively over the previous week.

The main strength came from the Fine larger sizes, with 1.0 carats rising 3.2% and 0.5 carats 2.0%, 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

121.2

-0.2%

5.2%

115.9

12-Jan

121.5

02-Jul

4.5%

                   

1 crt/4gr

Fine

121.7

3.2%

13.6%

107.7

30-Aug

126.8

02-Jul

7.3%

 

Commercial

116.5

-0.7%

6.3%

109.5

02-Mar

120.4

20-Sep

4.9%

 

Mixed

99.6

0.9%

4.2%

94.3

05-Feb

99.6

08-Oct

3.9%

                   

0.5 crts / 50 pts

Fine

108.2

2.0%

16.6%

92.8

02-Aug

108.2

08-Oct

13.0%

 

Commercial

109.2

-3.2%

8.8%

99.6

02-Jan

112.8

01-Oct

11.3%

 

Mixed

94.6

-2.0%

-3.0%

94.6

08-Oct

100.5

26-Apr

-2.0%

                   

0.3 ctrs/ 30 pts

Fine

110.3

-6.6%

8.2%

98.8

09-Feb

119.4

27-Sep

12.1%

 

Commercial

122.2

-3.9%

7.4%

110.3

04-Jan

127.8

25-Sep

12.1%

 

Mixed

124.2

-1.6%

0.0%

122.0

12-Jan

127.0

24-Sep

1.4%

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.