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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 $445 NZD
As of November 3, 2026
Save $3,262 NZD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,708 NZD 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 $445 to $3,708, a $3,262 spread on the same certified stone. Do Amore Diamonds lists it at $3,708. 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

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 3
Current: $3,708 NZD|Low: $426 NZD|High: $3,708 NZD|Avg: $1,419 NZD
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$445 NZD
Retailer 8$500 NZD
Retailer 5$532 NZD
Retailer 7$660 NZD
Retailer 14$763 NZD
Retailer 11$990 NZD
Retailer 3$1,006 NZD
Retailer 13$1,034 NZD
Retailer 15$1,153 NZD
Retailer 9$1,394 NZD
Retailer 4$1,558 NZD
Retailer 10$2,053 NZD
Retailer 6$2,134 NZD
Retailer 12$2,187 NZD
Retailer 2$2,253 NZD
Do Amore Diamonds$3,708 NZD

37 data points across 16 retailers

18 retailers$445 NZD to $3,708 NZD

Retailer 1
-
$435 NZD
Price last confirmed 31 days ago
A
Retailer 2
-
$445 NZD
View
Final sale: no returns
A
Retailer 3
-
$500 NZD
View
Retailer 4
-
$532 NZD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$660 NZD
View
A
Retailer 6
-
$692 NZD
View
A
Retailer 7
-
$763 NZD
View
B+
Retailer 8
-
$990 NZD
View
B+
Retailer 9
-
$1,006 NZD
View
B+
Retailer 10
-
$1,034 NZD
View
Retailer 11
-
$1,153 NZD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,394 NZD
View
B
Retailer 13
-
$1,558 NZD
View
B
Retailer 14
-
$2,053 NZD
View
Retailer 15
-
$2,134 NZD
View
Price last confirmed 17 days ago
B
Retailer 16
-
$2,187 NZD
View
B
Retailer 17
-
$2,253 NZD
View
Most Expensive
B
Do Amore Diamonds
32-LG778616981 · Nov 4
$3,708 NZD
$2,090 USD
View
17 more retailers have this diamond
Prices start from $445 NZDSave up to $3,262 NZD

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
$445 NZD