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Round|Lab Grown|IGI

1.31ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG492112479

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112479

Diamond specifications and retailer prices

From $945 SGD
As of November 5, 2026
Save $3,264 SGD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,210 SGD at MOH London · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492112479 or 492112479. Listed at 12 retailers as of November 5, 2026, with prices from $945 to $4,210, a $3,264 spread on the same certified stone. MOH London lists it at $4,210. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112479
Dimensions6.99 × 6.97 × 4.33 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
6.99 mm6.97 mm1.31 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112479
Side View
Table 56.0%Crown 35.7°Girdle: MediumPavilion 40.3°Culet: NoneDepth 62.0%

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: Nov 5
Current: $4,210 SGD|Low: $777 SGD|High: $4,276 SGD|Avg: $1,693 SGD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2$945 SGD
Retailer 5$971 SGD
Retailer 8$1,087 SGD
Retailer 6$1,125 SGD
Retailer 10$1,125 SGD
Retailer 11$1,185 SGD
Retailer 9$1,354 SGD
Retailer 3$1,767 SGD
Retailer 7$1,821 SGD
Retailer 4$2,677 SGD
MOH London$4,210 SGD

19 data points across 11 retailers

12 retailers$945 SGD to $4,210 SGD

A
Cheapest Retailer
-
$945 SGD
A
Retailer 2
-
$971 SGD
View
A
Retailer 3
-
$1,056 SGD
View
A
Retailer 4
-
$1,087 SGD
View
Final sale: no returns
B+
Retailer 5
-
$1,125 SGD
View
Retailer 6
-
$1,125 SGD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$1,185 SGD
View
B+
Retailer 8
-
$1,354 SGD
View
B
Retailer 9
-
$1,821 SGD
View
B
Retailer 10
-
$2,677 SGD
View
B
Retailer 11
-
$3,165 SGD
View
Most Expensive
B
MOH London
LG492112479 · Nov 5
$4,210 SGD
£2,595 GBP
View
11 more retailers have this diamond
Prices start from $945 SGDSave up to $3,264 SGD

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
$945 SGD