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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 $2,190 USD
As of November 4, 2026
Save $7,130 USD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,320 USD 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 $2,190 to $9,320, a $7,130 spread on the same certified stone. Brilliant Earth lists it at $9,320. 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
Color
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

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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: $9,320 USD|Low: $2,190 USD|High: $13,130 USD|Avg: $5,485 USD|-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$2,190 USD
Retailer 3$2,448 USD
Retailer 7$2,521 USD
Retailer 6$2,829 USD
Retailer 10$3,035 USD
Retailer 11$3,194 USD
Retailer 8$4,921 USD
Retailer 13$5,134 USD
Retailer 12$5,251 USD
Retailer 2$5,741 USD
Retailer 5$6,450 USD
Retailer 9$7,079 USD
Brilliant Earth$9,320 USD

35 data points across 13 retailers

13 retailers$2,190 USD to $9,320 USD

A
Cheapest Retailer
-
$2,190 USD
A
Retailer 2
-
$2,448 USD
View
A
Retailer 3
-
$2,521 USD
View
A
Retailer 4
-
$2,829 USD
View
A
Retailer 5
-
$3,035 USD
View
A
Retailer 6
-
$3,194 USD
View
B+
Retailer 7
-
$4,921 USD
View
B+
Retailer 8
-
$5,134 USD
View
B+
Retailer 9
-
$5,251 USD
View
B+
Retailer 10
-
$5,741 USD
View
Retailer 11
-
$6,450 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$7,079 USD
View
Most Expensive
B
Brilliant Earth
20870143Y · Nov 4
$9,320 USD
View
12 more retailers have this diamond
Prices start from $2,190 USDSave up to $7,130 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
3.10ct Cushion
$2,190 USD