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Oval|Lab Grown|IGI

1.28ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG729580171

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG729580171

Diamond specifications and retailer prices

From $212 SGD
$166 USD
As of November 1, 2026
Save $1,017 SGD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,229 SGD at MOH London · As of November 1, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG729580171 or 729580171. Listed at 12 retailers as of November 1, 2026, with prices from $212 to $1,229, a $1,017 spread on the same certified stone. MOH London lists it at $1,229. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729580171
Dimensions9.06 × 6.11 × 3.68 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.06 mm6.11 mm1.28 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729580171
Side View
Table 61.0%Crown 32°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,229 SGD|Low: $212 SGD|High: $1,700 SGD|Avg: $679 SGD|-0.5%
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
Retailer 16
November 1, 2026
Retailer 11$212 SGD
Retailer 4$245 SGD
Retailer 12$263 SGD
Retailer 15$295 SGD
Retailer 2$341 SGD
Retailer 9$466 SGD
Retailer 16$474 SGD
Retailer 5$499 SGD
Retailer 14$574 SGD
Retailer 13$586 SGD
Retailer 3$845 SGD
Retailer 10$892 SGD
Retailer 7$896 SGD
Retailer 6$1,183 SGD
MOH London$1,229 SGD
Retailer 8$1,700 SGD

6 data points across 16 retailers

12 retailers$212 SGD to $1,229 SGD

A
Cheapest Retailer
-
$212 SGD
$166 USD
A
Retailer 2
-
$245 SGD
$192 USD
View
A
Retailer 3
-
$263 SGD
$206 USD
View
A
Retailer 4
-
$295 SGD
HK$1,800 HKD
View
A
Retailer 5
-
$341 SGD
£210 GBP
View
A
Retailer 6
-
$466 SGD
£287 GBP
View
B+
Retailer 7
-
$474 SGD
$371 USD
View
B+
Retailer 8
-
$574 SGD
$449 USD
View
B+
Retailer 9
-
$586 SGD
$458 USD
View
B
Retailer 10
-
$845 SGD
$661 USD
View
B
Retailer 11
-
$892 SGD
$698 USD
View
Most Expensive
B
MOH London
LG729580171 · Nov 1
$1,229 SGD
£757 GBP
View
11 more retailers have this diamond
Prices start from $212 SGDSave up to $1,017 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
$212 SGD