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Round|Lab Grown|IGI

2.51ct J SI2 Round Lab Grown Diamond

VG • J/SI2 • IGI LG499190304

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499190304

Diamond specifications and retailer prices

From $1,370 USD
As of October 30, 2026
Save $6,881 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,251 USD at MOH London · As of October 27, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG499190304 or 499190304. Listed at 11 retailers as of October 27, 2026, with prices from $1,370 to $8,251, a $6,881 spread on the same certified stone. MOH London lists it at $8,251. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
J
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499190304
Dimensions8.66 × 8.63 × 5.39 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
8.66 mm8.63 mm2.51 ctJ / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499190304
Side View
Table 55.5%Crown 36.9°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.4%

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: $8,251 USD|Low: $1,370 USD|High: $8,340 USD|Avg: $4,016 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 2$1,370 USD
Retailer 8$2,653 USD
Retailer 12$2,887 USD
Retailer 11$2,972 USD
Retailer 6$3,067 USD
Retailer 3$3,078 USD
Retailer 9$3,078 USD
Retailer 4$3,749 USD
Retailer 13$4,230 USD
Retailer 7$4,516 USD
Retailer 10$4,793 USD
Retailer 5$6,889 USD
MOH London$8,251 USD

38 data points across 13 retailers

11 retailers$1,370 USD to $8,251 USD

A
Cheapest Retailer
-
$1,370 USD
B+
Retailer 2
-
$2,653 USD
View
B+
Retailer 3
-
$2,887 USD
View
B+
Retailer 4
-
$2,972 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,067 USD
£2,415 GBP
View
Retailer 6
-
$3,078 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$3,078 USD
View
B
Retailer 8
-
$4,230 USD
View
B
Retailer 9
-
$4,516 USD
View
B
Retailer 10
-
$4,793 USD
View
Most Expensive
C
MOH London
LG499190304 · Oct 27
$8,251 USD
£6,497 GBP
View
10 more retailers have this diamond
Prices start from $1,370 USDSave up to $6,881 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
$1,370 USD