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Round|Lab Grown|IGI

2.51ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG499106402

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499106402

Diamond specifications and retailer prices

From $1,380 USD
As of October 29, 2026
Save $7,438 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,818 USD at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499106402 or 499106402. Listed at 10 retailers as of October 29, 2026, with prices from $1,380 to $8,818, a $7,438 spread on the same certified stone. MOH London lists it at $8,818. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499106402
Dimensions8.76 × 8.72 × 5.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.76 mm8.72 mm2.51 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499106402
Side View
Table 61.0%Crown 35.5°GirdlePavilion 40.2°Culet: NoneDepth 60.0%

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 29
Current: $8,818 USD|Low: $1,380 USD|High: $8,887 USD|Avg: $4,675 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6$1,380 USD
Retailer 5$2,983 USD
Retailer 9$3,245 USD
Retailer 11$3,340 USD
Retailer 7$3,460 USD
Retailer 12$4,174 USD
Retailer 10$4,324 USD
Retailer 2$4,971 USD
Retailer 8$5,377 USD
Retailer 3$6,447 USD
Retailer 4$7,744 USD
MOH London$8,818 USD

17 data points across 12 retailers

10 retailers$1,380 USD to $8,818 USD

A
Cheapest Retailer
-
$1,380 USD
B+
Retailer 2
-
$2,983 USD
View
B+
Retailer 3
-
$3,245 USD
View
B+
Retailer 4
-
$3,340 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,460 USD
View
Retailer 6
-
$3,460 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$4,324 USD
View
B
Retailer 8
-
$4,971 USD
View
B
Retailer 9
-
$5,377 USD
View
Most Expensive
B
MOH London
LG499106402 · Oct 29
$8,818 USD
£6,943 GBP
View
9 more retailers have this diamond
Prices start from $1,380 USDSave up to $7,438 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 Round
$1,380 USD