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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 $232 CAD
$166 USD
As of October 29, 2026
Save $1,118 CAD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,350 CAD at MOH London · As of October 29, 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 October 29, 2026, with prices from $232 to $1,350, a $1,118 spread on the same certified stone. MOH London lists it at $1,350. 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
Color
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

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: Oct 29
Current: $1,350 CAD|Low: $232 CAD|High: $1,858 CAD|Avg: $744 CAD
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
October 31, 2026
Retailer 11$232 CAD
Retailer 4$268 CAD
Retailer 12$288 CAD
Retailer 15$322 CAD
Retailer 10$373 CAD
Retailer 2$509 CAD
Retailer 16$518 CAD
Retailer 5$546 CAD
Retailer 14$627 CAD
Retailer 13$640 CAD
Retailer 3$923 CAD
Retailer 9$975 CAD
Retailer 7$979 CAD
Retailer 6$1,292 CAD
MOH London$1,350 CAD
Retailer 8$1,858 CAD

5 data points across 16 retailers

12 retailers$232 CAD to $1,350 CAD

A
Cheapest Retailer
-
$232 CAD
$166 USD
A
Retailer 2
-
$268 CAD
$192 USD
View
A
Retailer 3
-
$288 CAD
$206 USD
View
A
Retailer 4
-
$322 CAD
HK$1,800 HKD
View
A
Retailer 5
-
$373 CAD
£211 GBP
View
A
Retailer 6
-
$509 CAD
£287 GBP
View
B+
Retailer 7
-
$518 CAD
$371 USD
View
B+
Retailer 8
-
$627 CAD
$449 USD
View
B+
Retailer 9
-
$640 CAD
$458 USD
View
B
Retailer 10
-
$923 CAD
$661 USD
View
B
Retailer 11
-
$975 CAD
$698 USD
View
Most Expensive
B
MOH London
LG729580171 · Oct 29
$1,350 CAD
£761 GBP
View
11 more retailers have this diamond
Prices start from $232 CADSave up to $1,118 CAD

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
$232 CAD