CaratHunter
Plans
Marquise|Lab Grown|IGI

3.09ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG780663326

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780663326

Diamond specifications and retailer prices

From $3,593 USD
As of October 31, 2026
Save $14,420 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,013 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.09ct lab-grown marquise diamond

This 3.09ct lab-grown marquise 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 LG780663326 or 780663326. Listed at 12 retailers as of October 30, 2026, with prices from $3,593 to $18,013, a $14,420 spread on the same certified stone. Taylor and Hart lists it at $18,013. 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 angle32.9°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663326
Dimensions15.09 × 7.69 × 4.66 mm
L/W Ratio1.96
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
15.09 mm7.69 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663326
Side View
Table 62.0%Crown 32.9°Girdle: Slightly ThickPavilion 40.1°Culet: NoneDepth 60.6%

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 31
Current: $9,160 USD|Low: $3,593 USD|High: $23,612 USD|Avg: $10,123 USD|-30.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
October 30, 2026
Retailer 10$3,593 USD
Retailer 5$4,041 USD
Retailer 11$4,314 USD
Retailer 2$6,400 USD
Retailer 7$6,528 USD
Retailer 13$7,775 USD
Retailer 8$8,293 USD
Retailer 3$8,638 USD
Retailer 1$9,160 USD
Retailer 9$10,517 USD
Retailer 6$11,730 USD
Retailer 12$13,596 USD
Taylor and Hart$18,013 USD
Retailer 4$23,612 USD

39 data points across 14 retailers

12 retailers$3,593 USD to $18,013 USD

A
Cheapest Retailer
-
$3,593 USD
A
Retailer 2
-
$4,314 USD
View
B+
Retailer 3
-
$6,400 USD
HK$50,000 HKD
View
B+
Retailer 4
-
$6,528 USD
£5,140 GBP
View
B+
Retailer 5
-
$7,775 USD
View
B+
Retailer 6
-
$8,293 USD
€7,898 EUR
View
B+
Retailer 7
-
$8,638 USD
View
B+
Retailer 8
-
$9,160 USD
View
B+
Retailer 9
-
$10,517 USD
£8,281 GBP
View
B+
Retailer 10
-
$11,730 USD
ZAR 189,502 ZAR
View
B
Retailer 11
-
$13,596 USD
View
Most Expensive
B
Taylor and Hart
PDT5PTM · Oct 30
$18,013 USD
View
11 more retailers have this diamond
Prices start from $3,593 USDSave up to $14,420 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 Marquise
$3,593 USD