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Marquise|Lab Grown|IGI

2.50ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818684299

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818684299

Diamond specifications and retailer prices

From $3,688 USD
As of October 30, 2026
Save $12,232 USD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $15,920 USD at With Clarity · As of October 30, 2026
View at With Clarity

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 LG818684299 or 818684299. Listed at 12 retailers as of October 30, 2026, with prices from $3,688 to $15,920, a $12,232 spread on the same certified stone. With Clarity lists it at $15,920. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818684299
Dimensions13.62 × 7.02 × 4.50 mm
L/W Ratio1.94
Girdle conditionFaceted
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
13.62 mm7.02 mm2.50 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818684299
Side View
Table 56.0%Crown 35°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 64.1%

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: $5,427 USD|Low: $3,688 USD|High: $15,920 USD|Avg: $8,820 USD|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
October 30, 2026
Retailer 7$3,688 USD
Retailer 2$5,018 USD
Retailer 1$5,427 USD
Retailer 8$6,175 USD
Retailer 6$6,550 USD
Retailer 9$8,620 USD
Retailer 5$8,744 USD
Retailer 10$10,190 USD
Retailer 4$10,474 USD
Retailer 3$10,780 USD
Retailer 11$14,285 USD
With Clarity$15,920 USD

33 data points across 12 retailers

12 retailers$3,688 USD to $15,920 USD

A
Cheapest Retailer
-
$3,688 USD
B+
Retailer 2
-
$5,018 USD
HK$39,200 HKD
View
B+
Retailer 3
-
$5,427 USD
£4,274 GBP
View
B+
Retailer 4
-
$6,175 USD
View
B+
Retailer 5
-
$6,550 USD
€6,238 EUR
View
B
Retailer 6
-
$8,620 USD
View
B+
Retailer 7
-
$8,744 USD
£6,885 GBP
View
B
Retailer 8
-
$10,190 USD
View
B
Retailer 9
-
$10,474 USD
ZAR 169,203 ZAR
View
B
Retailer 10
-
$10,780 USD
View
B
Retailer 11
-
$14,285 USD
View
Most Expensive
B
With Clarity
818684299 · Oct 30
$15,920 USD
View
11 more retailers have this diamond
Prices start from $3,688 USDSave up to $12,232 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
$3,688 USD