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Oval|Lab Grown|IGI

2.51ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG831685212

Shape and cutting style on the report: Oval modified brilliant

Certificate IGI LG831685212

Diamond specifications and retailer prices

From $432 USD
As of October 31, 2026
Save $1,374 USD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,806 USD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct lab-grown oval diamond

This 2.51ct lab-grown oval sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831685212 or 831685212. Listed at 12 retailers as of October 31, 2026, with prices from $432 to $1,806, a $1,374 spread on the same certified stone. MOH London lists it at $1,806. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831685212
Dimensions9.96 × 7.94 × 4.81 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.96 mm7.94 mm2.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831685212
Side View
Table 58.0%Crown 37.8°Girdle: MED-STKPavilion 37°Culet: NoneDepth 60.6%

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 31
Current: $1,806 USD|Low: $432 USD|High: $1,806 USD|Avg: $986 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 10$432 USD
Retailer 7$462 USD
Retailer 2$584 USD
Retailer 6$610 USD
Retailer 8$731 USD
Retailer 3$737 USD
Retailer 12$830 USD
Retailer 11$833 USD
Retailer 5$835 USD
Retailer 9$1,486 USD
Retailer 4$1,765 USD
MOH London$1,806 USD

5 data points across 12 retailers

12 retailers$432 USD to $1,806 USD

A
Cheapest Retailer
-
$432 USD
A
Retailer 2
-
$462 USD
View
A
Retailer 3
-
$584 USD
£460 GBP
View
A
Retailer 4
-
$610 USD
View
B+
Retailer 5
-
$731 USD
€696 EUR
View
B+
Retailer 6
-
$737 USD
View
B+
Retailer 7
-
$830 USD
View
B+
Retailer 8
-
$833 USD
View
B+
Retailer 9
-
$835 USD
£658 GBP
View
B
Retailer 10
-
$1,486 USD
View
B
Retailer 11
-
$1,765 USD
View
Most Expensive
B
MOH London
LG831685212 · Nov 1
$1,806 USD
£1,422 GBP
View
11 more retailers have this diamond
Prices start from $432 USDSave up to $1,374 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 Oval
$432 USD