Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG593386843

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

Certificate IGI LG593386843

Diamond specifications and retailer prices

From $481 CAD
$344 USD
As of October 30, 2026
Save $4,381 CAD (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,861 CAD at Brilliant Earth · As of October 8, 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 LG593386843 or 593386843. Listed at 23 retailers as of October 30, 2026, with a 912% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle42.4°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG593386843
Dimensions7.83 × 5.74 × 3.92 mm
L/W Ratio1.36
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
7.83 mm5.74 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG593386843
Side View
Table 62.0%Crown 42.4°Girdle: MediumPavilion 36°Culet: NoneDepth 68.3%

Caratlytics Score

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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: $4,861 CAD|Low: $461 CAD|High: $4,861 CAD|Avg: $1,447 CAD
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 31, 2026
Retailer 3$481 CAD
Retailer 7$538 CAD
Retailer 4$595 CAD
Retailer 11$615 CAD
Retailer 10$799 CAD
Retailer 15$810 CAD
Retailer 14$1,024 CAD
Retailer 2$1,049 CAD
Retailer 9$1,070 CAD
Retailer 13$1,383 CAD
Retailer 16$1,436 CAD
Retailer 6$1,915 CAD
Retailer 5$2,250 CAD
Retailer 8$2,309 CAD
Retailer 12$2,340 CAD
Brilliant Earth$4,861 CAD

32 data points across 16 retailers

23 retailers$481 CAD to $4,861 CAD

A
Cheapest Retailer
-
$481 CAD
$344 USD
A
Retailer 2
-
$538 CAD
$385 USD
View
Final sale: no returns
A
Retailer 3
-
$557 CAD
$399 USD
View
A
Retailer 4
-
$595 CAD
$426 USD
View
A
Retailer 5
-
$595 CAD
$426 USD
View
A
Retailer 6
-
$615 CAD
£347 GBP
View
A
Retailer 7
-
$799 CAD
$572 USD
View
A
Retailer 8
-
$810 CAD
$580 USD
View
A
Retailer 9
-
$953 CAD
$682 USD
View
A
Retailer 10
-
$1,024 CAD
ZAR 11,839 ZAR
View
A
Retailer 11
-
$1,049 CAD
€715 EUR
View
A
Retailer 12
-
$1,070 CAD
£603 GBP
View
A
Retailer 13
-
$1,383 CAD
A$1,523 AUD
View
B+
Retailer 14
-
$1,436 CAD
$1,028 USD
View
B+
Retailer 15
-
$1,440 CAD
$1,031 USD
View
B+
Retailer 16
-
$1,915 CAD
$1,371 USD
View
B+
Retailer 17
-
$1,930 CAD
£1,088 GBP
View
B+
Retailer 18
-
$1,974 CAD
$1,413 USD
View
B+
Retailer 19
-
$2,250 CAD
$1,611 USD
View
B+
Retailer 20
-
$2,309 CAD
$1,653 USD
View
B+
Retailer 21
-
$2,340 CAD
£1,319 GBP
View
B
Retailer 22
-
$4,861 CAD
$3,480 USD
View
Most Expensive
Brilliant Earth
21385297A · Oct 8
$4,861 CAD
$3,480 USD
View
Price last confirmed 23 days ago
22 more retailers have this diamond
Prices start from $481 CADSave up to $4,381 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
$481 CAD