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Marquise|Lab Grown|IGI

3.09ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG784604230

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784604230

Diamond specifications and retailer prices

From $3,725 USD
As of October 30, 2026
Save $15,311 USD (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $28,610 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 LG784604230 or 784604230. Listed at 23 retailers as of October 30, 2026, with a 411% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784604230
Dimensions14.66 × 7.65 × 4.79 mm
L/W Ratio1.92
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
14.66 mm7.65 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784604230
Side View
Table 61.0%Crown 34.8°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.6%

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: Oct 30
Current: $28,610 USD|Low: $3,725 USD|High: $33,780 USD|Avg: $11,608 USD|-15.3%
Do Amore Diamonds
Retailer 2
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Retailer 19
October 29, 2026
Retailer 18$3,725 USD
Retailer 15$4,358 USD
Retailer 8$4,656 USD
Retailer 5$4,824 USD
Retailer 17$4,875 USD
Retailer 16$6,277 USD
Retailer 11$6,654 USD
Retailer 12$6,897 USD
Retailer 19$6,910 USD
Retailer 10$7,513 USD
Retailer 3$7,800 USD
Retailer 13$8,286 USD
Retailer 14$11,085 USD
Retailer 2$12,363 USD
Retailer 4$13,927 USD
Retailer 6$16,885 USD
Retailer 9$18,285 USD
Retailer 7$19,036 USD
Do Amore Diamonds$28,610 USD

41 data points across 19 retailers

23 retailers$3,725 USD to $19,036 USD

A
Cheapest Retailer
-
$3,725 USD
A
Retailer 2
-
$4,159 USD
View
A
Retailer 3
-
$4,358 USD
View
A
Retailer 4
-
$4,656 USD
View
Final sale: no returns
Retailer 5
-
$4,824 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$4,824 USD
View
A
Retailer 7
-
$4,875 USD
View
A
Retailer 8
-
$6,277 USD
View
B+
Retailer 9
-
$6,654 USD
View
B+
Retailer 10
-
$6,897 USD
£5,430 GBP
View
B+
Retailer 11
-
$6,910 USD
View
B+
Retailer 12
-
$7,513 USD
£5,916 GBP
View
B+
Retailer 13
-
$7,800 USD
View
B+
Retailer 14
-
$8,286 USD
€7,891 EUR
View
B+
Retailer 15
-
$11,085 USD
£8,728 GBP
View
B+
Retailer 16
-
$12,363 USD
ZAR 199,722 ZAR
View
B
Retailer 17
-
$13,927 USD
View
B
Retailer 18
-
$14,577 USD
View
B
Retailer 19
-
$14,808 USD
View
B
Retailer 20
-
$16,885 USD
View
B
Retailer 21
-
$18,285 USD
View
B
Retailer 22
-
$19,036 USD
View
Most Expensive
Do Amore Diamonds
27-A3903FB24 · Oct 29
$28,610 USD
View
Price under review
22 more retailers have this diamond
Prices start from $3,725 USDSave up to $15,311 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
$3,725 USD