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Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG836617751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836617751

Diamond specifications and retailer prices

From $425 CAD
$304 USD
As of October 30, 2026
Save $2,206 CAD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,631 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617751 or 836617751. Listed at 16 retailers as of October 29, 2026, with prices from $425 to $2,631, a $2,206 spread on the same certified stone. Brilliant Earth lists it at $2,631. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617751
Dimensions6.90 × 6.95 × 4.31 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
6.90 mm6.95 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617751
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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 30
Current: $2,631 CAD|Low: $425 CAD|High: $3,107 CAD|Avg: $1,231 CAD|-15.3%
Brilliant Earth
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 30, 2026
Retailer 7$425 CAD
Retailer 4$472 CAD
Retailer 3$735 CAD
Retailer 2$750 CAD
Retailer 5$780 CAD
Retailer 10$782 CAD
Retailer 12$810 CAD
Retailer 9$826 CAD
Retailer 6$1,106 CAD
Retailer 16$1,447 CAD
Retailer 14$1,530 CAD
Retailer 8$1,586 CAD
Retailer 13$1,680 CAD
Retailer 11$1,898 CAD
Retailer 15$2,232 CAD
Brilliant Earth$2,631 CAD

27 data points across 16 retailers

16 retailers$425 CAD to $2,631 CAD

A
Cheapest Retailer
-
$425 CAD
$304 USD
Final sale: no returns
A
Retailer 2
-
$472 CAD
$337 USD
View
A
Retailer 3
-
$735 CAD
$525 USD
View
A
Retailer 4
-
$750 CAD
£422 GBP
View
A
Retailer 5
-
$780 CAD
$557 USD
View
A
Retailer 6
-
$782 CAD
€532 EUR
View
A
Retailer 7
-
$810 CAD
ZAR 9,344 ZAR
View
A
Retailer 8
-
$826 CAD
£465 GBP
View
A
Retailer 9
-
$1,106 CAD
$790 USD
View
B+
Retailer 10
-
$1,447 CAD
$1,034 USD
View
B+
Retailer 11
-
$1,530 CAD
SGD 1,477 SGD
View
B+
Retailer 12
-
$1,586 CAD
$1,133 USD
View
B+
Retailer 13
-
$1,680 CAD
$1,200 USD
View
B+
Retailer 14
-
$1,898 CAD
£1,068 GBP
View
Retailer 15
-
$2,232 CAD
$1,595 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21640958A · Oct 29
$2,631 CAD
$1,880 USD
View
15 more retailers have this diamond
Prices start from $425 CADSave up to $2,206 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
$425 CAD