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Cushion|Lab Grown|IGI

0.51ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG778616981

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

Certificate IGI LG778616981

Diamond specifications and retailer prices

From $358 AUD
As of November 3, 2026
Save $2,621 AUD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,979 AUD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG778616981 or 778616981. Listed at 18 retailers as of November 3, 2026, with prices from $358 to $2,979, a $2,621 spread on the same certified stone. Do Amore Diamonds lists it at $2,979. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778616981
Dimensions4.51 × 4.46 × 3.10 mm
L/W Ratio1.01
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
4.51 mm4.46 mm0.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778616981
Side View
Table 62.0%Crown 37.4°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 69.5%

Caratlytics Score

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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: Nov 3
Current: $2,979 AUD|Low: $342 AUD|High: $2,979 AUD|Avg: $1,141 AUD
Do Amore Diamonds
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
November 4, 2026
Retailer 16$358 AUD
Retailer 8$402 AUD
Retailer 5$428 AUD
Retailer 7$530 AUD
Retailer 14$613 AUD
Retailer 11$795 AUD
Retailer 3$808 AUD
Retailer 13$831 AUD
Retailer 15$927 AUD
Retailer 9$1,120 AUD
Retailer 4$1,252 AUD
Retailer 10$1,649 AUD
Retailer 6$1,715 AUD
Retailer 12$1,758 AUD
Retailer 2$1,810 AUD
Do Amore Diamonds$2,979 AUD

37 data points across 16 retailers

18 retailers$358 AUD to $2,979 AUD

Retailer 1
-
$349 AUD
Price last confirmed 31 days ago
A
Retailer 2
-
$358 AUD
View
Final sale: no returns
A
Retailer 3
-
$402 AUD
View
Retailer 4
-
$428 AUD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$530 AUD
View
A
Retailer 6
-
$556 AUD
View
A
Retailer 7
-
$613 AUD
View
B+
Retailer 8
-
$795 AUD
View
B+
Retailer 9
-
$808 AUD
View
B+
Retailer 10
-
$831 AUD
View
Retailer 11
-
$927 AUD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,120 AUD
View
B
Retailer 13
-
$1,252 AUD
View
B
Retailer 14
-
$1,649 AUD
View
Retailer 15
-
$1,715 AUD
View
Price last confirmed 17 days ago
B
Retailer 16
-
$1,758 AUD
View
B
Retailer 17
-
$1,810 AUD
View
Most Expensive
B
Do Amore Diamonds
32-LG778616981 · Nov 4
$2,979 AUD
$2,090 USD
View
17 more retailers have this diamond
Prices start from $358 AUDSave up to $2,621 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
0.51ct Cushion
$358 AUD