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1.25ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG781613089

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781613089

Diamond specifications and retailer prices

From $490 SGD
As of November 5, 2026
Save $804 SGD (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,294 SGD at MOH London · As of November 5, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG781613089 or 781613089. Listed at 6 retailers as of November 5, 2026, with prices from $490 to $1,294, a $804 spread on the same certified stone. MOH London lists it at $1,294. 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

1.25
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781613089
Dimensions6.96 × 6.94 × 4.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.96 mm6.94 mm1.25 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781613089
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.3%

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: $1,294 SGD|Low: $442 SGD|High: $1,327 SGD|Avg: $680 SGD|+4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 2$490 SGD
Retailer 6$493 SGD
Retailer 3$511 SGD
Retailer 4$626 SGD
Retailer 5$692 SGD
MOH London$1,294 SGD

42 data points across 6 retailers

6 retailers$490 SGD to $1,294 SGD

A
Cheapest Retailer
-
$490 SGD
A
Retailer 2
-
$493 SGD
View
A
Retailer 3
-
$511 SGD
View
B+
Retailer 4
-
$626 SGD
View
B+
Retailer 5
-
$692 SGD
View
Most Expensive
B
MOH London
LG781613089 · Nov 5
$1,294 SGD
£798 GBP
View
5 more retailers have this diamond
Prices start from $490 SGDSave up to $804 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
1.25ct Round
$490 SGD