Round|Lab Grown|IGI

2.50ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG490175151

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490175151

Diamond specifications and retailer prices

From $3,968 USD
As of November 5, 2026
Save $3,163 USD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,859 USD at MOH London · As of November 3, 2026
View at MOH London

About this 2.5ct lab-grown round diamond

This 2.5ct lab-grown round sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490175151 or 490175151. Listed at 9 retailers as of November 4, 2026, with a 80% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.50
Carat
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490175151
Dimensions8.57 × 8.62 × 5.39 mm
L/W Ratio1.01
Girdle conditionFaceted
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
8.57 mm8.62 mm2.50 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490175151
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $9,859 USD|Low: $3,809 USD|High: $10,457 USD|Avg: $6,413 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$3,968 USD
Retailer 2$4,463 USD
Retailer 5$4,603 USD
Retailer 7$4,603 USD
Retailer 8$5,135 USD
Retailer 3$6,105 USD
Retailer 6$7,131 USD
MOH London$9,859 USD
Retailer 9$10,457 USD

37 data points across 9 retailers

9 retailers$3,968 USD to $7,131 USD

B+
Cheapest Retailer
-
$3,968 USD
B
Retailer 2
-
$4,159 USD
View
B
Retailer 3
-
$4,463 USD
View
B
Retailer 4
-
$4,603 USD
View
Retailer 5
-
$4,603 USD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$5,752 USD
View
B
Retailer 7
-
$6,105 USD
View
C
Retailer 8
-
$7,131 USD
View
Most Expensive
MOH London
LG490175151 · Nov 3
$9,859 USD
£7,763 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $3,968 USDSave up to $3,163 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.

B+
2.50ct Round
$3,968 USD