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Cushion|Lab Grown|IGI

1.86ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG840633271

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG840633271

Diamond specifications and retailer prices

From $1,058 AUD
$743 USD
As of October 30, 2026
Save $4,879 AUD (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,936 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.86ct lab-grown cushion diamond

This 1.86ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840633271 or 840633271. Listed at 20 retailers as of October 30, 2026, with prices from $1,058 to $5,936, a $4,879 spread on the same certified stone. Brilliant Earth lists it at $5,936. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633271
Dimensions7.16 × 6.99 × 4.77 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.16 mm6.99 mm1.86 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633271
Side View
Table 56.0%Crown 35°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 68.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,936 AUD|Low: $780 AUD|High: $8,485 AUD|Avg: $3,089 AUD|-30.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 5$1,058 AUD
Retailer 12$1,062 AUD
Retailer 15$1,142 AUD
Retailer 18$1,246 AUD
Retailer 8$1,394 AUD
Retailer 19$1,650 AUD
Retailer 2$1,686 AUD
Retailer 17$1,850 AUD
Retailer 16$1,855 AUD
Retailer 3$2,244 AUD
Retailer 13$2,330 AUD
Retailer 7$3,124 AUD
Retailer 4$3,480 AUD
Retailer 14$3,676 AUD
Retailer 9$3,825 AUD
Retailer 20$4,681 AUD
Retailer 11$5,089 AUD
Retailer 10$5,139 AUD
Retailer 6$5,391 AUD
Brilliant Earth$5,936 AUD

24 data points across 20 retailers

20 retailers$1,058 AUD to $5,936 AUD

A
Cheapest Retailer
-
$1,058 AUD
$743 USD
Final sale: no returns
Retailer 2
-
$1,062 AUD
$746 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$1,142 AUD
£632 GBP
View
A
Retailer 4
-
$1,246 AUD
$875 USD
View
A
Retailer 5
-
$1,394 AUD
$979 USD
View
A
Retailer 6
-
$1,650 AUD
$1,159 USD
View
A
Retailer 7
-
$1,686 AUD
£932 GBP
View
A
Retailer 8
-
$1,850 AUD
ZAR 20,998 ZAR
View
A
Retailer 9
-
$1,855 AUD
€1,241 EUR
View
A
Retailer 10
-
$2,244 AUD
$1,576 USD
View
A
Retailer 11
-
$2,330 AUD
$1,637 USD
View
B+
Retailer 12
-
$3,124 AUD
£1,728 GBP
View
B+
Retailer 13
-
$3,480 AUD
$2,445 USD
View
B+
Retailer 14
-
$3,676 AUD
$2,582 USD
View
B+
Retailer 15
-
$3,825 AUD
SGD 3,631 SGD
View
B+
Retailer 16
-
$4,681 AUD
£2,589 GBP
View
B
Retailer 17
-
$5,089 AUD
$3,575 USD
View
Retailer 18
-
$5,139 AUD
$3,610 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$5,391 AUD
$3,787 USD
View
Most Expensive
B
Brilliant Earth
21729253A · Oct 30
$5,936 AUD
$4,170 USD
View
19 more retailers have this diamond
Prices start from $1,058 AUDSave up to $4,879 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.86ct Cushion
$1,058 AUD