Radiant|Lab Grown|IGI

3.09ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG784644370

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

Certificate IGI LG784644370

Diamond specifications and retailer prices

From $1,679 USD
As of October 27, 2026
Save $11,321 USD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,000 USD at Brilliant Earth · As of October 29, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784644370 or 784644370. Listed at 15 retailers as of October 27, 2026, with prices from $1,679 to $13,000, a $11,321 spread on the same certified stone. Brilliant Earth lists it at $13,000. 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
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644370
Dimensions10.12 × 7.12 × 4.93 mm
L/W Ratio1.42
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
10.12 mm7.12 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644370
Side View
Table 59.0%Crown 42.9°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $13,000 USD|Low: $1,679 USD|High: $16,540 USD|Avg: $5,508 USD|-3.0%
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
Retailer 14
Retailer 15
October 30, 2026
Retailer 13$1,679 USD
Retailer 4$1,827 USD
Retailer 12$2,015 USD
Retailer 15$2,055 USD
Retailer 8$2,488 USD
Retailer 7$2,834 USD
Retailer 14$3,062 USD
Retailer 3$3,359 USD
Retailer 5$3,630 USD
Retailer 11$4,022 USD
Retailer 10$5,384 USD
Retailer 6$5,675 USD
Retailer 9$6,161 USD
Retailer 2$11,530 USD
Brilliant Earth$13,000 USD

33 data points across 15 retailers

15 retailers$1,679 USD to $13,000 USD

A
Cheapest Retailer
-
$1,679 USD
A
Retailer 2
-
$1,827 USD
View
A
Retailer 3
-
$2,015 USD
View
A
Retailer 4
-
$2,055 USD
View
A
Retailer 5
-
$2,488 USD
View
A
Retailer 6
-
$2,834 USD
View
Final sale: no returns
A
Retailer 7
-
$3,062 USD
View
A
Retailer 8
-
$3,359 USD
View
B+
Retailer 9
-
$3,630 USD
€3,457 EUR
View
B+
Retailer 10
-
$4,022 USD
View
B+
Retailer 11
-
$5,384 USD
View
Retailer 12
-
$5,675 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
$6,161 USD
£4,851 GBP
View
B
Retailer 14
-
$11,530 USD
View
Most Expensive
B
Brilliant Earth
19065815Y · Oct 29
$13,000 USD
View
14 more retailers have this diamond
Prices start from $1,679 USDSave up to $11,321 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
$1,679 USD