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Round|Lab Grown|IGI

1.28ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG840635053

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840635053

Diamond specifications and retailer prices

From $369 CAD
As of November 3, 2026
Save $2,619 CAD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,988 CAD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840635053 or 840635053. Listed at 22 retailers as of November 3, 2026, with prices from $369 to $2,988, a $2,619 spread on the same certified stone. Helzberg Diamonds lists it at $2,988. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635053
Dimensions6.96 × 7.00 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.96 mm7.00 mm1.28 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635053
Side View
Table 55.0%Crown 33.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $2,988 CAD|Low: $369 CAD|High: $3,536 CAD|Avg: $1,245 CAD
Helzberg Diamonds
Retailer 2
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Retailer 22
November 4, 2026
Retailer 21$369 CAD
Retailer 2$412 CAD
Retailer 5$428 CAD
Retailer 6$457 CAD
Retailer 11$464 CAD
Retailer 18$678 CAD
Retailer 19$736 CAD
Retailer 13$760 CAD
Retailer 9$764 CAD
Retailer 7$799 CAD
Retailer 12$818 CAD
Retailer 17$864 CAD
Retailer 20$994 CAD
Retailer 22$1,404 CAD
Retailer 4$1,469 CAD
Retailer 14$1,495 CAD
Retailer 3$1,540 CAD
Retailer 15$1,636 CAD
Retailer 10$1,868 CAD
Retailer 16$2,005 CAD
Retailer 8$2,474 CAD
Helzberg Diamonds$2,988 CAD

19 data points across 22 retailers

22 retailers$369 CAD to $2,988 CAD

A
Cheapest Retailer
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$369 CAD
A
Retailer 2
-
$412 CAD
View
Final sale: no returns
A
Retailer 3
-
$428 CAD
View
A
Retailer 4
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$457 CAD
View
Retailer 5
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$464 CAD
View
Price last confirmed 10 days ago
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Retailer 6
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$678 CAD
View
A
Retailer 7
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$736 CAD
View
A
Retailer 8
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$760 CAD
View
A
Retailer 9
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$764 CAD
View
A
Retailer 10
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$799 CAD
View
A
Retailer 11
-
$818 CAD
View
A
Retailer 12
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$864 CAD
View
B+
Retailer 13
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$994 CAD
View
B+
Retailer 14
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$1,404 CAD
View
B+
Retailer 15
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$1,469 CAD
View
B
Retailer 16
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$1,495 CAD
View
B+
Retailer 17
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$1,540 CAD
View
B
Retailer 18
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$1,636 CAD
View
B+
Retailer 19
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$1,868 CAD
View
B
Retailer 20
-
$2,005 CAD
View
B
Retailer 21
-
$2,474 CAD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJLGLJ · Nov 4
$2,988 CAD
$2,138 USD
View
21 more retailers have this diamond
Prices start from $369 CADSave up to $2,619 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
$369 CAD