CaratHunter
Plans
Cushion|Lab Grown|IGI

3.09ct F IF Cushion Lab Grown Diamond

EX • F/IF • IGI LG681589668

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG681589668

Diamond specifications and retailer prices

From $1,280 USD
As of November 4, 2026
Save $4,580 USD (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,860 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681589668 or 681589668. Listed at 19 retailers as of November 4, 2026, with prices from $1,280 to $5,860, a $4,580 spread on the same certified stone. Brilliant Earth lists it at $5,860. 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

3.09
Carat
F
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681589668
Dimensions8.41 × 8.41 × 5.41 mm
L/W Ratio1.00
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
8.41 mm8.41 mm3.09 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681589668
Side View
Table 61.0%Crown 37.3°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 64.3%

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 4
Current: $5,860 USD|Low: $1,067 USD|High: $5,870 USD|Avg: $3,031 USD|-0.2%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 10$1,263 USD
Retailer 13$1,280 USD
Retailer 8$1,662 USD
Retailer 11$1,686 USD
Retailer 16$1,757 USD
Retailer 17$2,224 USD
Retailer 15$2,495 USD
Retailer 12$2,516 USD
Retailer 14$2,568 USD
Retailer 6$2,837 USD
Retailer 4$3,048 USD
Retailer 3$3,067 USD
Retailer 5$3,284 USD
Retailer 18$3,595 USD
Retailer 2$3,737 USD
Retailer 7$3,846 USD
Retailer 9$4,435 USD
Brilliant Earth$5,860 USD

36 data points across 18 retailers

19 retailers$1,280 USD to $5,860 USD

Retailer 1
-
$1,263 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$1,280 USD
View
A
Retailer 3
-
$1,662 USD
View
A
Retailer 4
-
$1,686 USD
View
A
Retailer 5
-
$1,757 USD
View
Retailer 6
-
$1,894 USD
View
Price last confirmed 24 days ago
A
Retailer 7
-
$2,224 USD
View
A
Retailer 8
-
$2,495 USD
View
A
Retailer 9
-
$2,516 USD
View
Final sale: no returns
A
Retailer 10
-
$2,568 USD
View
A
Retailer 11
-
$2,837 USD
View
A
Retailer 12
-
$3,048 USD
View
A
Retailer 13
-
$3,067 USD
View
B+
Retailer 14
-
$3,284 USD
View
B+
Retailer 15
-
$3,595 USD
View
B+
Retailer 16
-
$3,737 USD
View
B+
Retailer 17
-
$3,846 USD
View
B+
Retailer 18
-
$4,435 USD
View
Most Expensive
B
Brilliant Earth
13438341A · Nov 4
$5,860 USD
View
18 more retailers have this diamond
Prices start from $1,280 USDSave up to $4,580 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
3.09ct Cushion
$1,280 USD