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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG779630639

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779630639

Diamond specifications and retailer prices

From $372 CAD
$266 USD
As of October 29, 2026
Save $3,099 CAD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,471 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG779630639 or 779630639. Listed at 25 retailers as of October 29, 2026, with prices from $372 to $3,471, a $3,099 spread on the same certified stone. Brilliant Earth lists it at $3,471. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779630639
Dimensions6.93 × 6.98 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.93 mm6.98 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779630639
Side View
Table 59.0%Crown 34.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

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: $3,471 CAD|Low: $360 CAD|High: $3,471 CAD|Avg: $1,130 CAD
Brilliant Earth
Retailer 2
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Retailer 24
October 30, 2026
Retailer 23$372 CAD
Retailer 24$416 CAD
Retailer 2$431 CAD
Retailer 12$465 CAD
Retailer 16$465 CAD
Retailer 13$619 CAD
Retailer 10$686 CAD
Retailer 19$747 CAD
Retailer 9$799 CAD
Retailer 14$819 CAD
Retailer 6$832 CAD
Retailer 7$881 CAD
Retailer 20$882 CAD
Retailer 21$1,019 CAD
Retailer 8$1,132 CAD
Retailer 11$1,183 CAD
Retailer 4$1,381 CAD
Retailer 5$1,481 CAD
Retailer 15$1,495 CAD
Retailer 22$1,554 CAD
Retailer 17$1,763 CAD
Retailer 3$1,859 CAD
Retailer 18$1,964 CAD
Brilliant Earth$3,471 CAD

28 data points across 24 retailers

25 retailers$372 CAD to $3,471 CAD

A
Cheapest Retailer
-
$372 CAD
$266 USD
A
Retailer 2
-
$416 CAD
$297 USD
View
Final sale: no returns
A
Retailer 3
-
$431 CAD
$308 USD
View
A
Retailer 4
-
$465 CAD
$332 USD
View
A
Retailer 5
-
$465 CAD
$332 USD
View
A
Retailer 6
-
$520 CAD
HK$2,900 HKD
View
A
Retailer 7
-
$619 CAD
$442 USD
View
A
Retailer 8
-
$686 CAD
$490 USD
View
A
Retailer 9
-
$747 CAD
£420 GBP
View
A
Retailer 10
-
$799 CAD
ZAR 9,225 ZAR
View
A
Retailer 11
-
$819 CAD
$585 USD
View
A
Retailer 12
-
$832 CAD
€566 EUR
View
A
Retailer 13
-
$881 CAD
A$968 AUD
View
A
Retailer 14
-
$882 CAD
£496 GBP
View
A
Retailer 15
-
$1,019 CAD
$728 USD
View
A
Retailer 16
-
$1,132 CAD
A$1,244 AUD
View
B+
Retailer 17
-
$1,183 CAD
$845 USD
View
B+
Retailer 18
-
$1,381 CAD
A$1,518 AUD
View
B+
Retailer 19
-
$1,481 CAD
SGD 1,430 SGD
View
B+
Retailer 20
-
$1,495 CAD
$1,068 USD
View
B+
Retailer 21
-
$1,554 CAD
$1,111 USD
View
Retailer 22
-
$1,763 CAD
$1,260 USD
View
Price last confirmed 22 days ago
B+
Retailer 23
-
$1,859 CAD
£1,046 GBP
View
B+
Retailer 24
-
$1,964 CAD
$1,404 USD
View
Most Expensive
B
Brilliant Earth
18530693A · Oct 29
$3,471 CAD
$2,480 USD
View
24 more retailers have this diamond
Prices start from $372 CADSave up to $3,099 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
$372 CAD