Radiant|Lab Grown|IGI

3.09ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG780663846

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

Certificate IGI LG780663846

Diamond specifications and retailer prices

From $2,584 USD
As of October 29, 2026
Save $10,546 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $13,130 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 LG780663846 or 780663846. Listed at 13 retailers as of October 29, 2026, with prices from $2,584 to $13,130, a $10,546 spread on the same certified stone. Brilliant Earth lists it at $13,130. 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 angle39.6°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663846
Dimensions10.77 × 7.25 × 4.64 mm
L/W Ratio1.49
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
10.77 mm7.25 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663846
Side View
Table 65.0%Crown 39.6°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 64.0%

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: Oct 29
Current: $13,130 USD|Low: $2,584 USD|High: $13,140 USD|Avg: $6,341 USD|+1.0%
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
October 30, 2026
Retailer 10$2,584 USD
Retailer 12$3,008 USD
Retailer 11$3,316 USD
Retailer 2$3,390 USD
Retailer 9$3,720 USD
Retailer 5$4,124 USD
Retailer 6$5,721 USD
Retailer 8$6,458 USD
Retailer 13$6,638 USD
Retailer 7$6,720 USD
Retailer 4$8,614 USD
Retailer 3$9,538 USD
Brilliant Earth$13,130 USD

40 data points across 13 retailers

13 retailers$2,584 USD to $13,130 USD

A
Cheapest Retailer
-
$2,584 USD
A
Retailer 2
-
$3,008 USD
HK$23,500 HKD
View
A
Retailer 3
-
$3,316 USD
View
A
Retailer 4
-
$3,390 USD
£2,670 GBP
View
B+
Retailer 5
-
$3,720 USD
View
B+
Retailer 6
-
$4,124 USD
€3,928 EUR
View
B+
Retailer 7
-
$5,721 USD
ZAR 92,422 ZAR
View
B+
Retailer 8
-
$6,458 USD
View
B+
Retailer 9
-
$6,638 USD
View
B+
Retailer 10
-
$6,720 USD
£5,291 GBP
View
B
Retailer 11
-
$8,614 USD
View
B
Retailer 12
-
$9,538 USD
View
Most Expensive
B
Brilliant Earth
19712348A · Oct 29
$13,130 USD
View
12 more retailers have this diamond
Prices start from $2,584 USDSave up to $10,546 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
$2,584 USD