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Inventories
 12 Months Ended
Dec. 31, 2021
Disclosure Of Inventories Explanatory [Abstract]  
Inventories
6.
INVENTORIES
 
     
December 31,
 
2021
 
     
 
December 31,
 
2020
 
  
     
Ore stockpile
   
$
                                         26,411
 
    $                                          9,203  
     
Rough diamonds
   
 
44,255
        48,036  
     
Supplies inventory
   
 
39,166
        33,267  
     
Total
   
$
 109,832
 
    $ 90,506  
Depreciation and depletion included in inventories at December 31, 2021 is $12,203 (2020 - $13,663).
The amount of inventory expensed approximates cost of sales with respect to production costs incurred, and the cost of acquired diamonds. Included in the production costs is a net realizable value adjustment for $Nil that was recognized against the rough diamond and ore stockpile inventory for the year ended December 31, 2021 (2020 - $17 million).
The write-down is included in the cost of sales in the statement of comprehensive income (loss) for the year ended December 31, 2020.
Included in inventories and production costs, for the year ended December 31, 2021 are the Company’s 49% share of payroll and employee benefits for staff of the GK Mine of $41,054 (2020 - $34,271).