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Round|Lab Grown|IGI

1.31ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG496135573

Shape and cutting style on the report: Round brilliant

Certificate IGI LG496135573

Diamond specifications and retailer prices

From $661 USD
As of October 29, 2026
Save $2,572 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,233 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.31ct lab-grown round diamond

This 1.31ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496135573 or 496135573. Listed at 10 retailers as of October 26, 2026, with prices from $661 to $3,233, a $2,572 spread on the same certified stone. MOH London lists it at $3,233. 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

1.31
Carat
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496135573
Dimensions7.07 × 7.12 × 4.30 mm
L/W Ratio1.01
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
7.07 mm7.12 mm1.31 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496135573
Side View
Table 56.0%Crown 33°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 60.5%

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: $3,233 USD|Low: $634 USD|High: $3,268 USD|Avg: $1,317 USD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4$661 USD
Retailer 7$739 USD
Retailer 2$760 USD
Retailer 5$767 USD
Retailer 8$767 USD
Retailer 9$1,239 USD
Retailer 6$1,251 USD
Retailer 10$1,715 USD
Retailer 3$1,958 USD
MOH London$3,233 USD

14 data points across 10 retailers

10 retailers$661 USD to $3,233 USD

A
Cheapest Retailer
-
$661 USD
A
Retailer 2
-
$719 USD
View
A
Retailer 3
-
$739 USD
View
Final sale: no returns
A
Retailer 4
-
$760 USD
View
A
Retailer 5
-
$767 USD
View
Retailer 6
-
$767 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$1,251 USD
View
B
Retailer 8
-
$1,958 USD
View
B
Retailer 9
-
$2,155 USD
View
Most Expensive
B
MOH London
LG496135573 · Oct 26
$3,233 USD
£2,546 GBP
View
9 more retailers have this diamond
Prices start from $661 USDSave up to $2,572 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
1.31ct Round
$661 USD