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Round|Lab Grown|IGI

1.28ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG788620074

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788620074

Diamond specifications and retailer prices

From $219 SGD
As of November 5, 2026
Save $1,052 SGD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,271 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round 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 LG788620074 or 788620074. Listed at 15 retailers as of November 2, 2026, with prices from $219 to $1,271, a $1,052 spread on the same certified stone. MOH London lists it at $1,271. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788620074
Dimensions7.06 × 7.03 × 4.18 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.06 mm7.03 mm1.28 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788620074
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.3%

Caratlytics Score

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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: $1,271 SGD|Low: $219 SGD|High: $1,286 SGD|Avg: $631 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$219 SGD
Retailer 8$272 SGD
Retailer 2$467 SGD
Retailer 4$478 SGD
Retailer 9$486 SGD
Retailer 5$590 SGD
Retailer 10$595 SGD
Retailer 6$691 SGD
Retailer 3$807 SGD
MOH London$1,271 SGD

43 data points across 10 retailers

15 retailers$219 SGD to $1,271 SGD

A
Cheapest Retailer
-
$219 SGD
A
Retailer 2
-
$254 SGD
View
A
Retailer 3
-
$272 SGD
View
Retailer 4
-
$272 SGD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$467 SGD
View
A
Retailer 6
-
$478 SGD
View
B+
Retailer 7
-
$486 SGD
View
A
Retailer 8
-
$524 SGD
View
A
Retailer 9
-
$590 SGD
View
B+
Retailer 10
-
$595 SGD
View
B+
Retailer 11
-
$691 SGD
View
B+
Retailer 12
-
$807 SGD
View
B
Retailer 13
-
$874 SGD
View
B+
Retailer 14
-
$943 SGD
View
Most Expensive
B
MOH London
LG788620074 · Nov 2
$1,271 SGD
£781 GBP
View
14 more retailers have this diamond
Prices start from $219 SGDSave up to $1,052 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 Round
$219 SGD