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Marquise|Lab Grown|IGI

2.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG836638868

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836638868

Diamond specifications and retailer prices

From $1,070 USD
As of October 30, 2026
Save $3,265 USD (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,335 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

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 LG836638868 or 836638868. Listed at 17 retailers as of October 30, 2026, with prices from $1,070 to $4,335, a $3,265 spread on the same certified stone. Taylor and Hart lists it at $4,335. 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 angle30.9°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836638868
Dimensions14.86 × 6.86 × 4.38 mm
L/W Ratio2.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.86 mm6.86 mm2.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836638868
Side View
Table 62.0%Crown 30.9°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
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: $1,797 USD|Low: $1,003 USD|High: $5,109 USD|Avg: $2,668 USD|-12.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 3$1,197 USD
Retailer 8$1,241 USD
Retailer 5$1,415 USD
Retailer 1$1,797 USD
Retailer 11$1,977 USD
Retailer 12$2,326 USD
Retailer 2$2,517 USD
Retailer 10$2,634 USD
Retailer 6$2,944 USD
Retailer 4$3,429 USD
Retailer 9$3,593 USD
Retailer 7$4,232 USD
Taylor and Hart$4,335 USD

44 data points across 13 retailers

17 retailers$1,070 USD to $4,335 USD

A
Cheapest Retailer
-
$1,070 USD
A
Retailer 2
-
$1,164 USD
View
A
Retailer 3
-
$1,197 USD
View
Final sale: no returns
A
Retailer 4
-
$1,241 USD
View
Retailer 5
-
$1,241 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$1,415 USD
View
Retailer 7
-
$1,436 USD
View
Price last confirmed 35 days ago
A
Retailer 8
-
$1,797 USD
£1,415 GBP
View
A
Retailer 9
-
$1,977 USD
View
A
Retailer 10
-
$2,326 USD
View
A
Retailer 11
-
$2,517 USD
View
A
Retailer 12
-
$2,634 USD
View
Retailer 13
-
$2,944 USD
A$4,529 AUD
View
Price last confirmed 9 days ago
A
Retailer 14
-
$3,429 USD
£2,700 GBP
View
A
Retailer 15
-
$3,593 USD
View
B+
Retailer 16
-
$4,232 USD
£3,332 GBP
View
Most Expensive
B+
Taylor and Hart
QCVCQE1 · Oct 30
$4,335 USD
View
16 more retailers have this diamond
Prices start from $1,070 USDSave up to $3,265 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
2.51ct Marquise
$1,070 USD