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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG780663587

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

Certificate IGI LG780663587

Diamond specifications and retailer prices

From $3,885 NZD
As of November 4, 2026
Save $12,649 NZD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $16,534 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG780663587 or 780663587. Listed at 13 retailers as of November 4, 2026, with prices from $3,885 to $16,534, a $12,649 spread on the same certified stone. Brilliant Earth lists it at $16,534. 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

3.10
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663587
Dimensions8.59 × 8.54 × 5.54 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
8.59 mm8.54 mm3.10 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663587
Side View
Table 59.0%Crown 36.7°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 64.9%

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: Nov 4
Current: $16,534 NZD|Low: $3,885 NZD|High: $23,293 NZD|Avg: $9,730 NZD|-29.0%
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
November 5, 2026
Retailer 4$3,885 NZD
Retailer 3$4,343 NZD
Retailer 7$4,472 NZD
Retailer 6$5,019 NZD
Retailer 10$5,384 NZD
Retailer 11$5,666 NZD
Retailer 8$8,730 NZD
Retailer 13$9,108 NZD
Retailer 12$9,315 NZD
Retailer 2$10,185 NZD
Retailer 5$11,442 NZD
Retailer 9$12,558 NZD
Brilliant Earth$16,534 NZD

35 data points across 13 retailers

13 retailers$3,885 NZD to $16,534 NZD

A
Cheapest Retailer
-
$3,885 NZD
A
Retailer 2
-
$4,343 NZD
View
A
Retailer 3
-
$4,472 NZD
View
A
Retailer 4
-
$5,019 NZD
View
A
Retailer 5
-
$5,384 NZD
View
A
Retailer 6
-
$5,666 NZD
View
B+
Retailer 7
-
$8,730 NZD
View
B+
Retailer 8
-
$9,108 NZD
View
B+
Retailer 9
-
$9,315 NZD
View
B+
Retailer 10
-
$10,185 NZD
View
Retailer 11
-
$11,442 NZD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$12,558 NZD
View
Most Expensive
B
Brilliant Earth
20870143Y · Nov 4
$16,534 NZD
$9,320 USD
View
12 more retailers have this diamond
Prices start from $3,885 NZDSave up to $12,649 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
3.10ct Cushion
$3,885 NZD