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1.25ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG805675956

Shape and cutting style on the report: Round brilliant

Certificate IGI LG805675956

Diamond specifications and retailer prices

From $453 SGD
As of November 5, 2026
Save $757 SGD (63%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,210 SGD at MOH London · As of November 4, 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 LG805675956 or 805675956. Listed at 8 retailers as of November 4, 2026, with prices from $453 to $1,210, a $757 spread on the same certified stone. MOH London lists it at $1,210. 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

1.25
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805675956
Dimensions6.92 × 6.88 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.92 mm6.88 mm1.25 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805675956
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.4%

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: Nov 5
Current: $1,210 SGD|Low: $434 SGD|High: $1,220 SGD|Avg: $667 SGD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2$453 SGD
Retailer 4$462 SGD
Retailer 7$467 SGD
Retailer 6$507 SGD
Retailer 3$511 SGD
Retailer 8$766 SGD
Retailer 5$881 SGD
MOH London$1,210 SGD

19 data points across 8 retailers

8 retailers$453 SGD to $1,210 SGD

A
Cheapest Retailer
-
$453 SGD
A
Retailer 2
-
$462 SGD
View
B+
Retailer 3
-
$467 SGD
View
A
Retailer 4
-
$507 SGD
View
A
Retailer 5
-
$511 SGD
View
B
Retailer 6
-
$766 SGD
View
B
Retailer 7
-
$881 SGD
View
Most Expensive
B
MOH London
LG805675956 · Nov 4
$1,210 SGD
£746 GBP
View
7 more retailers have this diamond
Prices start from $453 SGDSave up to $757 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
$453 SGD