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Diamond index ends lower in volatile trading

The overall polishedprices index hit a year to date high on Tuesday before slipping back.

Daily Index levels

Level

Daily Change

Monday 14/01

120.8

0.4%

Tuesday  015/01

121.0

0.1%

Wednesday 16/01

120.8

-0.2%

Thursday 17/01

120.4

-0.3%

Friday 18/01

120.9

0.4%

Monday 21/01

120.5

-0.3%

Weekly Index

The main polishedprices index opened on Monday at 120.5 points, down 0.2% compared to the previous Monday. The overall index is 3.2% above its level of this time last year, and has gained 0.8% since the start of the year.

Amongst the benchmark categories, only the 1.0 carat categories were in positive territory, with Fine, Commercial and Mixed adding 0.6, 0.2% and 0.4% respectively compared to the previous Monday.

The largest loss came from the Fine 0.3 carat range, which slipped 4.4% over the week.

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

120.5

-0.2%

3.2%

118.9

04-Jan

121.0

15-Jan

0.8%

                   

1 crt/4gr

Fine

117.1

0.6%

3.8%

113.8

03-Jan

118.1

10-Jan

3.6%

 

Commercial

116.9

0.2%

1.2%

112.2

04-Jan

119.2

08-Jan

0.4%

 

Mixed

110.2

0.4%

14.3%

109.2

10-Jan

110.7

02-Jan

-0.6%

                   

0.5 crts / 50 pts

Fine

98.0

-1.1%

1.2%

94.8

02-Jan

102.0

10-Jan

1.5%

 

Commercial

103.2

-0.1%

1.6%

101.0

02-Jan

107.2

07-Jan

0.8%

 

Mixed

97.5

-0.1%

-0.8%

96.9

11-Jan

98.6

07-Jan

-0.7%

                   

0.3 ctrs/ 30 pts

Fine

100.9

-4.4%

-3.1%

100.9

21-Jan

106.9

07-Jan

-1.9%

 

Commercial

110.8

-3.3%

-3.6%

108.9

02-Jan

115.4

07-Jan

1.6%

 

Mixed

117.1

-1.2%

-4.3%

117.1

21-Jan

120.1

03-Jan

-2.8%

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.