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Cushion|Lab Grown|IGI

1.31ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG776609771

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG776609771

Diamond specifications and retailer prices

From $824 AUD
As of November 4, 2026
Save $3,104 AUD (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,928 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG776609771 or 776609771. Listed at 18 retailers as of November 4, 2026, with prices from $824 to $3,928, a $3,104 spread on the same certified stone. Brilliant Earth lists it at $3,928. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776609771
Dimensions7.51 × 5.71 × 3.94 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
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
7.51 mm5.71 mm1.31 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776609771
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 69.0%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $3,928 AUD|Low: $824 AUD|High: $4,286 AUD|Avg: $2,146 AUD|-5.5%
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
November 5, 2026
Retailer 18$824 AUD
Retailer 10$961 AUD
Retailer 17$1,006 AUD
Retailer 12$1,107 AUD
Retailer 4$1,217 AUD
Retailer 15$1,390 AUD
Retailer 5$1,393 AUD
Retailer 11$1,400 AUD
Retailer 7$1,416 AUD
Retailer 13$1,574 AUD
Retailer 16$2,224 AUD
Retailer 14$2,628 AUD
Retailer 3$2,656 AUD
Retailer 9$2,890 AUD
Retailer 6$2,968 AUD
Retailer 8$3,141 AUD
Retailer 2$3,800 AUD
Brilliant Earth$3,928 AUD

41 data points across 18 retailers

18 retailers$824 AUD to $3,928 AUD

A
Cheapest Retailer
-
$824 AUD
Final sale: no returns
Retailer 2
-
$961 AUD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$1,006 AUD
View
A
Retailer 4
-
$1,107 AUD
View
A
Retailer 5
-
$1,217 AUD
View
A
Retailer 6
-
$1,390 AUD
View
A
Retailer 7
-
$1,393 AUD
View
A
Retailer 8
-
$1,400 AUD
View
A
Retailer 9
-
$1,416 AUD
View
A
Retailer 10
-
$1,574 AUD
View
B+
Retailer 11
-
$2,224 AUD
View
B+
Retailer 12
-
$2,628 AUD
View
B
Retailer 13
-
$2,656 AUD
View
B
Retailer 14
-
$2,890 AUD
View
B
Retailer 15
-
$2,968 AUD
View
B
Retailer 16
-
$3,141 AUD
View
B
Retailer 17
-
$3,800 AUD
View
Most Expensive
B
Brilliant Earth
19077250A · Nov 4
$3,928 AUD
$2,750 USD
View
17 more retailers have this diamond
Prices start from $824 AUDSave up to $3,104 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
1.31ct Cushion
$824 AUD