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Radiant|Lab Grown|IGI

1.28ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG758557943

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG758557943

Diamond specifications and retailer prices

From $2,981 CAD
$2,130 USD
As of October 29, 2026
3 retailers carry this diamond
Most expensive: $2,981 CAD at Brilliant Earth
View at Brilliant Earth

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant 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 LG758557943 or 758557943. Listed at 3 retailers as of October 29, 2026. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758557943
Dimensions5.53 × 5.53 × 7.72 mm
L/W Ratio1.00
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
5.53 mm5.53 mm1.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758557943
Side View
Table 63.0%Crown 41.5°Girdle: MED-STKPavilion 33.8°Culet: NoneDepth 64.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $2,981 CAD|Low: $237 CAD|High: $3,541 CAD|Avg: $1,177 CAD|-15.8%
Brilliant Earth
Retailer 2
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Retailer 6
Retailer 7
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Retailer 16
September 15, 2026
Retailer 12$237 CAD
Retailer 5$277 CAD
Retailer 8$546 CAD
Retailer 10$691 CAD
Retailer 16$698 CAD
Retailer 9$716 CAD
Retailer 2$789 CAD
Retailer 11$852 CAD
Retailer 13$1,082 CAD
Retailer 4$1,215 CAD
Retailer 14$1,216 CAD
Retailer 7$1,399 CAD
Retailer 6$1,466 CAD
Retailer 3$1,578 CAD
Retailer 15$2,050 CAD
Brilliant Earth$2,981 CAD

59 data points across 16 retailers

3 retailers

Retailer 1
-
$1,082 CAD
A$1,189 AUD
Price last confirmed 71 days ago
Retailer 2
-
$2,050 CAD
$1,465 USD
View
Price last confirmed 50 days ago
Most Expensive
B
Brilliant Earth
16995238A · Oct 29
$2,981 CAD
$2,130 USD
View
2 more retailers have this diamond

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.

B
1.28ct Radiant
$2,981 CAD