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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG831684278

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

Certificate IGI LG831684278

Diamond specifications and retailer prices

From $4,043 NZD
As of November 4, 2026
Save $19,516 NZD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $23,559 NZD at Brilliant Earth · As of November 3, 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 top-tier cut grade and certified by IGI LG831684278 or 831684278. Listed at 14 retailers as of November 3, 2026, with prices from $4,043 to $23,559, a $19,516 spread on the same certified stone. Brilliant Earth lists it at $23,559. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831684278
Dimensions8.33 × 8.32 × 5.22 mm
L/W Ratio1.00
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
8.33 mm8.32 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831684278
Side View
Table 59.0%Crown 35.6°Girdle: MED-THKPavilion 33.7°Culet: NoneDepth 62.7%

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 4
Current: $23,559 NZD|Low: $4,043 NZD|High: $23,559 NZD|Avg: $8,886 NZD
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
November 5, 2026
Retailer 3$4,043 NZD
Retailer 12$4,419 NZD
Retailer 13$4,479 NZD
Retailer 4$4,836 NZD
Retailer 8$4,973 NZD
Retailer 7$5,705 NZD
Retailer 9$6,502 NZD
Retailer 11$6,551 NZD
Retailer 6$7,948 NZD
Retailer 10$9,755 NZD
Retailer 14$10,809 NZD
Retailer 2$11,928 NZD
Retailer 5$14,000 NZD
Brilliant Earth$23,559 NZD

9 data points across 14 retailers

14 retailers$4,043 NZD to $23,559 NZD

A
Cheapest Retailer
-
$4,043 NZD
Final sale: no returns
A
Retailer 2
-
$4,419 NZD
View
A
Retailer 3
-
$4,479 NZD
View
A
Retailer 4
-
$4,836 NZD
View
A
Retailer 5
-
$4,973 NZD
View
A
Retailer 6
-
$5,705 NZD
View
A
Retailer 7
-
$6,502 NZD
View
A
Retailer 8
-
$6,551 NZD
View
B+
Retailer 9
-
$7,948 NZD
View
B+
Retailer 10
-
$9,755 NZD
View
B+
Retailer 11
-
$10,809 NZD
View
B+
Retailer 12
-
$11,928 NZD
View
B
Retailer 13
-
$14,000 NZD
View
Most Expensive
B
Brilliant Earth
22341166A · Nov 3
$23,559 NZD
$13,280 USD
View
13 more retailers have this diamond
Prices start from $4,043 NZDSave up to $19,516 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
$4,043 NZD