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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG771614878

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

Certificate IGI LG771614878

Diamond specifications and retailer prices

From $405 CAD
$290 USD
As of October 30, 2026
Save $3,115 CAD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,520 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG771614878 or 771614878. Listed at 26 retailers as of October 30, 2026, with prices from $405 to $3,520, a $3,115 spread on the same certified stone. Brilliant Earth lists it at $3,520. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771614878
Dimensions8.08 × 5.57 × 3.86 mm
L/W Ratio1.45
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
8.08 mm5.57 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771614878
Side View
Table 65.0%Crown 42.8°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 69.3%

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: $3,520 CAD|Low: $405 CAD|High: $4,861 CAD|Avg: $1,484 CAD|-27.6%
Brilliant Earth
Retailer 2
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Retailer 6
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Retailer 22
Retailer 23
Retailer 24
Retailer 25
October 31, 2026
Retailer 7$405 CAD
Retailer 8$451 CAD
Retailer 25$469 CAD
Retailer 14$501 CAD
Retailer 24$501 CAD
Retailer 13$518 CAD
Retailer 17$554 CAD
Retailer 23$719 CAD
Retailer 2$818 CAD
Retailer 12$826 CAD
Retailer 22$863 CAD
Retailer 6$865 CAD
Retailer 19$888 CAD
Retailer 21$1,167 CAD
Retailer 3$1,414 CAD
Retailer 5$1,542 CAD
Retailer 18$1,608 CAD
Retailer 4$1,613 CAD
Retailer 11$1,682 CAD
Retailer 16$1,931 CAD
Retailer 10$1,959 CAD
Retailer 20$2,022 CAD
Retailer 15$2,068 CAD
Retailer 9$3,178 CAD
Brilliant Earth$3,520 CAD

32 data points across 25 retailers

26 retailers$405 CAD to $3,520 CAD

A
Cheapest Retailer
-
$405 CAD
$290 USD
A
Retailer 2
-
$451 CAD
$323 USD
View
Final sale: no returns
A
Retailer 3
-
$469 CAD
$336 USD
View
A
Retailer 4
-
$501 CAD
$359 USD
View
A
Retailer 5
-
$501 CAD
$359 USD
View
A
Retailer 6
-
$518 CAD
£292 GBP
View
A
Retailer 7
-
$554 CAD
HK$3,100 HKD
View
A
Retailer 8
-
$719 CAD
$515 USD
View
Retailer 9
-
$818 CAD
€558 EUR
View
A
Retailer 10
-
$826 CAD
$591 USD
View
A
Retailer 11
-
$863 CAD
ZAR 9,975 ZAR
View
A
Retailer 12
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$865 CAD
$619 USD
View
A
Retailer 13
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$888 CAD
£500 GBP
View
A
Retailer 14
-
$1,167 CAD
A$1,285 AUD
View
B+
Retailer 15
-
$1,414 CAD
$1,012 USD
View
B+
Retailer 16
-
$1,542 CAD
$1,104 USD
View
B+
Retailer 17
-
$1,608 CAD
SGD 1,556 SGD
View
B+
Retailer 18
-
$1,613 CAD
$1,155 USD
View
B+
Retailer 19
-
$1,682 CAD
$1,204 USD
View
B+
Retailer 20
-
$1,799 CAD
$1,288 USD
View
B+
Retailer 21
-
$1,931 CAD
$1,382 USD
View
B+
Retailer 22
-
$1,959 CAD
£1,104 GBP
View
B+
Retailer 23
-
$2,022 CAD
£1,140 GBP
View
B+
Retailer 24
-
$2,068 CAD
$1,480 USD
View
Retailer 25
-
$3,178 CAD
$2,275 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
19064245A · Oct 30
$3,520 CAD
$2,520 USD
View
25 more retailers have this diamond
Prices start from $405 CADSave up to $3,115 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
1.51ct Radiant
$405 CAD