Radiant|Lab Grown|IGI

3.09ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG754564236

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG754564236

Diamond specifications and retailer prices

From $341 USD
As of November 6, 2026
Save $2,729 USD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,070 USD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.09ct lab-grown radiant diamond

This 3.09ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754564236 or 754564236. Listed at 17 retailers as of November 6, 2026, with prices from $341 to $3,070, a $2,729 spread on the same certified stone. Brilliant Earth lists it at $3,070. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.09
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754564236
Dimensions10.57 × 7.25 × 4.84 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.57 mm7.25 mm3.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754564236
Side View
Table 65.0%Crown 37.8°Girdle: MediumPavilion 35.6°Culet: NoneDepth 66.8%

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 6
Current: $3,070 USD|Low: $336 USD|High: $3,140 USD|Avg: $958 USD|-1.6%
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 6, 2026
Retailer 18$341 USD
Retailer 5$381 USD
Retailer 15$395 USD
Retailer 14$422 USD
Retailer 17$422 USD
Retailer 3$519 USD
Retailer 7$568 USD
Retailer 12$575 USD
Retailer 2$741 USD
Retailer 6$741 USD
Retailer 11$750 USD
Retailer 9$1,038 USD
Retailer 4$1,238 USD
Retailer 16$1,357 USD
Retailer 10$1,400 USD
Retailer 8$1,642 USD
Retailer 13$1,691 USD
Brilliant Earth$3,070 USD

41 data points across 18 retailers

17 retailers$341 USD to $3,070 USD

A
Cheapest Retailer
-
$341 USD
A
Retailer 2
-
$381 USD
View
Final sale: no returns
A
Retailer 3
-
$395 USD
View
A
Retailer 4
-
$422 USD
View
Retailer 5
-
$422 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$568 USD
View
A
Retailer 7
-
$575 USD
View
A
Retailer 8
-
$741 USD
View
A
Retailer 9
-
$741 USD
View
A
Retailer 10
-
$750 USD
View
A
Retailer 11
-
$1,038 USD
View
B+
Retailer 12
-
$1,238 USD
View
B+
Retailer 13
-
$1,357 USD
View
B+
Retailer 14
-
$1,400 USD
View
B+
Retailer 15
-
$1,642 USD
View
B+
Retailer 16
-
$1,691 USD
View
Most Expensive
B
Brilliant Earth
18587410A · Nov 6
$3,070 USD
View
16 more retailers have this diamond
Prices start from $341 USDSave up to $2,729 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 Radiant
$341 USD