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Round|Lab Grown|IGI

1.05ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG780664743

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780664743

Diamond specifications and retailer prices

From $185 SGD
As of November 5, 2026
Save $889 SGD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,074 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG780664743 or 780664743. Listed at 11 retailers as of November 4, 2026, with prices from $185 to $1,074, a $889 spread on the same certified stone. MOH London lists it at $1,074. 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

1.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780664743
Dimensions6.56 × 6.51 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.56 mm6.51 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780664743
Side View
Table 58.0%Crown 33.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

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: $1,074 SGD|Low: $156 SGD|High: $1,327 SGD|Avg: $664 SGD|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 2$185 SGD
Retailer 11$212 SGD
Retailer 13$391 SGD
Retailer 10$425 SGD
Retailer 6$450 SGD
Retailer 4$521 SGD
Retailer 8$544 SGD
Retailer 9$741 SGD
Retailer 7$783 SGD
Retailer 3$811 SGD
MOH London$1,074 SGD
Retailer 12$1,124 SGD
Retailer 5$1,327 SGD

20 data points across 13 retailers

11 retailers$185 SGD to $1,074 SGD

A
Cheapest Retailer
-
$185 SGD
Retailer 2
-
$189 SGD
View
Price last confirmed 45 days ago
A
Retailer 3
-
$212 SGD
View
Final sale: no returns
Retailer 4
-
$220 SGD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$425 SGD
View
Retailer 6
-
$450 SGD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$544 SGD
View
B
Retailer 8
-
$741 SGD
View
Retailer 9
-
$756 SGD
View
Price last confirmed 41 days ago
B
Retailer 10
-
$783 SGD
View
Most Expensive
B
MOH London
LG780664743 · Nov 4
$1,074 SGD
£662 GBP
View
10 more retailers have this diamond
Prices start from $185 SGDSave up to $889 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
1.05ct Round
$185 SGD