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Marquise|Lab Grown|IGI

2.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG818684305

Certificate IGI LG818684305

Diamond specifications and retailer prices

From $2,760 USD
Save $7,841 USD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,601 USD at With Clarity
View at With Clarity

About this 2.51ct lab-grown marquise diamond

This 2.51ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818684305 or 818684305. Listed at 10 retailers, with prices from $2,760 to $10,601 at With Clarity, a $7,841 spread on the same certified stone. 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

2.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818684305
Dimensions13.93 × 7.11 × 4.47 mm
L/W Ratio1.96
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
13.93 mm7.11 mm2.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818684305
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 29
Current: $7,410 USD|Low: $3,314 USD|High: $10,601 USD|Avg: $6,159 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 1, 2026
Retailer 7$3,314 USD
Retailer 2$3,341 USD
Retailer 3$3,829 USD
Retailer 5$6,728 USD
Retailer 6$7,179 USD
Retailer 1$7,410 USD
Retailer 4$9,549 USD
With Clarity$10,601 USD

4 data points across 8 retailers

10 retailers$2,760 USD to $10,601 USD

B+
Cheapest Retailer
-
$2,760 USD
B+
Retailer 2
-
$3,314 USD
View
B+
Retailer 3
-
$3,341 USD
HK$26,100 HKD
View
B+
Retailer 4
-
$3,837 USD
£3,022 GBP
View
B
Retailer 5
-
$6,728 USD
A$10,351 AUD
View
B
Retailer 6
-
$7,179 USD
View
C
Retailer 7
-
$7,410 USD
£5,835 GBP
View
C
Retailer 8
-
$8,260 USD
View
C
Retailer 9
-
$9,549 USD
View
Most Expensive
C
With Clarity
818684305 · Sep 30
$10,601 USD
View
9 more retailers have this diamond
Prices start from $2,760 USDSave up to $7,841 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.

B+
2.51ct Marquise
$2,760 USD