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Cushion|Lab Grown|IGI

4.31ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG787621668

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG787621668

Diamond specifications and retailer prices

From $4,429 USD
As of November 2, 2026
Save $13,902 USD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $18,331 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.31ct lab-grown cushion diamond

This 4.31ct 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 LG787621668 or 787621668. Listed at 10 retailers as of October 31, 2026, with prices from $4,429 to $18,331, a $13,902 spread on the same certified stone. Taylor and Hart lists it at $18,331. 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

4.31
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787621668
Dimensions10.55 × 8.82 × 5.80 mm
L/W Ratio1.20
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
10.55 mm8.82 mm4.31 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787621668
Side View
Table 61.0%Crown 36.4°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 65.8%

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 2
Current: $6,598 USD|Low: $4,429 USD|High: $22,640 USD|Avg: $11,269 USD|-26.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
November 3, 2026
Retailer 6$4,429 USD
Retailer 5$4,761 USD
Retailer 8$6,490 USD
Retailer 1$6,598 USD
Retailer 4$7,882 USD
Retailer 3$8,383 USD
Retailer 2$10,636 USD
Retailer 7$13,360 USD
Retailer 9$14,792 USD
Taylor and Hart$18,331 USD

42 data points across 10 retailers

10 retailers$4,429 USD to $18,331 USD

A
Cheapest Retailer
-
$4,429 USD
A
Retailer 2
-
$4,761 USD
View
A
Retailer 3
-
$6,490 USD
HK$50,700 HKD
View
A
Retailer 4
-
$6,598 USD
£5,195 GBP
View
A
Retailer 5
-
$7,882 USD
View
A
Retailer 6
-
$8,383 USD
€7,984 EUR
View
B+
Retailer 7
-
$10,636 USD
£8,375 GBP
View
B+
Retailer 8
-
$13,360 USD
View
Retailer 9
-
$14,792 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Taylor and Hart
7XZ9630 · Oct 31
$18,331 USD
View
9 more retailers have this diamond
Prices start from $4,429 USDSave up to $13,902 USD

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
4.31ct Cushion
$4,429 USD