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Oval|Lab Grown|IGI

1.28ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG621476577

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG621476577

Diamond specifications and retailer prices

From $214 SGD
As of November 3, 2026
Save $1,025 SGD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,239 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval 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 LG621476577 or 621476577. Listed at 14 retailers as of November 3, 2026, with prices from $214 to $1,239, a $1,025 spread on the same certified stone. MOH London lists it at $1,239. 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

1.28
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621476577
Dimensions9.06 × 6.04 × 3.75 mm
L/W Ratio1.50
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
9.06 mm6.04 mm1.28 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621476577
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: $1,239 SGD|Low: $214 SGD|High: $1,257 SGD|Avg: $589 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
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 4, 2026
Retailer 3$214 SGD
Retailer 10$249 SGD
Retailer 13$265 SGD
Retailer 14$265 SGD
Retailer 12$319 SGD
Retailer 8$467 SGD
Retailer 9$470 SGD
Retailer 4$478 SGD
Retailer 7$616 SGD
Retailer 6$684 SGD
Retailer 2$775 SGD
Retailer 15$854 SGD
Retailer 11$902 SGD
Retailer 5$961 SGD
MOH London$1,239 SGD

38 data points across 15 retailers

14 retailers$214 SGD to $1,239 SGD

A
Cheapest Retailer
-
$214 SGD
A
Retailer 2
-
$249 SGD
View
Retailer 3
-
$265 SGD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$265 SGD
View
A
Retailer 5
-
$467 SGD
View
A
Retailer 6
-
$470 SGD
View
B+
Retailer 7
-
$478 SGD
View
B+
Retailer 8
-
$616 SGD
View
B+
Retailer 9
-
$684 SGD
View
B+
Retailer 10
-
$775 SGD
View
B+
Retailer 11
-
$854 SGD
View
B
Retailer 12
-
$902 SGD
View
B
Retailer 13
-
$961 SGD
View
Most Expensive
B
MOH London
LG621476577 · Nov 4
$1,239 SGD
£761 GBP
View
13 more retailers have this diamond
Prices start from $214 SGDSave up to $1,025 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
1.28ct Oval
$214 SGD