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Round|Lab Grown|IGI

1.28ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG819612892

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819612892

Diamond specifications and retailer prices

From $242 CAD
As of November 5, 2026
Save $1,154 CAD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,396 CAD at MOH London · As of November 5, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819612892 or 819612892. Listed at 14 retailers as of November 5, 2026, with prices from $242 to $1,396, a $1,154 spread on the same certified stone. MOH London lists it at $1,396. 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
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819612892
Dimensions6.99 × 6.97 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.99 mm6.97 mm1.28 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819612892
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°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: $1,396 CAD|Low: $232 CAD|High: $1,417 CAD|Avg: $628 CAD|-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
November 6, 2026
Retailer 8$242 CAD
Retailer 10$281 CAD
Retailer 3$299 CAD
Retailer 9$299 CAD
Retailer 5$528 CAD
Retailer 11$534 CAD
Retailer 6$615 CAD
Retailer 2$662 CAD
Retailer 4$756 CAD
Retailer 12$962 CAD
Retailer 7$1,017 CAD
MOH London$1,396 CAD

46 data points across 12 retailers

14 retailers$242 CAD to $1,396 CAD

A
Cheapest Retailer
-
$242 CAD
A
Retailer 2
-
$281 CAD
View
Retailer 3
-
$299 CAD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$299 CAD
View
A
Retailer 5
-
$528 CAD
View
B+
Retailer 6
-
$534 CAD
View
A
Retailer 7
-
$615 CAD
View
B+
Retailer 8
-
$635 CAD
View
A
Retailer 9
-
$662 CAD
View
B+
Retailer 10
-
$756 CAD
View
B
Retailer 11
-
$962 CAD
View
B+
Retailer 12
-
$1,017 CAD
View
B+
Retailer 13
-
$1,038 CAD
View
Most Expensive
B
MOH London
LG819612892 · Nov 5
$1,396 CAD
£787 GBP
View
13 more retailers have this diamond
Prices start from $242 CADSave up to $1,154 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 Round
$242 CAD