Marquise|Lab Grown|IGI

2.50ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG818673798

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818673798

Diamond specifications and retailer prices

From $3,043 USD
As of October 30, 2026
Save $9,249 USD (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,292 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 2.5ct lab-grown marquise diamond

This 2.5ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818673798 or 818673798. Listed at 19 retailers as of October 30, 2026, with prices from $3,043 to $12,292, a $9,249 spread on the same certified stone. Taylor and Hart lists it at $12,292. 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

2.50
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818673798
Dimensions13.48 × 7.04 × 4.11 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.48 mm7.04 mm2.50 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818673798
Side View
Table 62.0%Crown 33.9°Girdle: THK-VTKPavilion 35.3°Culet: NoneDepth 58.4%

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 30
Current: $3,580 USD|Low: $2,921 USD|High: $12,292 USD|Avg: $5,351 USD|-1.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Taylor and Hart
October 30, 2026
Retailer 2$3,043 USD
Retailer 7$3,270 USD
Retailer 16$3,310 USD
Retailer 3$3,408 USD
Retailer 5$3,530 USD
Retailer 8$3,530 USD
Retailer 6$3,553 USD
Retailer 1$3,580 USD
Retailer 17$3,690 USD
Retailer 14$4,285 USD
Retailer 4$4,411 USD
Retailer 11$4,770 USD
Retailer 15$4,968 USD
Retailer 9$5,484 USD
Retailer 10$6,081 USD
Retailer 18$8,866 USD
Retailer 13$8,959 USD
Retailer 12$9,105 USD
Taylor and Hart$12,292 USD

30 data points across 19 retailers

19 retailers$3,043 USD to $12,292 USD

A
Cheapest Retailer
-
$3,043 USD
A
Retailer 2
-
$3,270 USD
View
A
Retailer 3
-
$3,310 USD
View
A
Retailer 4
-
$3,408 USD
View
Final sale: no returns
Retailer 5
-
$3,530 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$3,530 USD
View
A
Retailer 7
-
$3,553 USD
View
A
Retailer 8
-
$3,580 USD
£2,819 GBP
View
A
Retailer 9
-
$3,690 USD
View
B+
Retailer 10
-
$4,285 USD
View
B+
Retailer 11
-
$4,411 USD
View
B+
Retailer 12
-
$4,770 USD
£3,756 GBP
View
B+
Retailer 13
-
$4,968 USD
View
B+
Retailer 14
-
$5,484 USD
View
B+
Retailer 15
-
$6,081 USD
£4,788 GBP
View
B
Retailer 16
-
$8,866 USD
View
B
Retailer 17
-
$8,959 USD
£7,054 GBP
View
B
Retailer 18
-
$9,105 USD
ZAR 147,090 ZAR
View
Most Expensive
B
Taylor and Hart
QL501ID · Oct 30
$12,292 USD
View
18 more retailers have this diamond
Prices start from $3,043 USDSave up to $9,249 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
2.50ct Marquise
$3,043 USD