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Radiant|Lab Grown|IGI

2.57ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG685528891

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

Certificate IGI LG685528891

Diamond specifications and retailer prices

From $1,226 CAD
$878 USD
As of October 30, 2026
Save $7,267 CAD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,493 CAD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG685528891 or 685528891. Listed at 13 retailers as of October 30, 2026, with prices from $1,226 to $8,493, a $7,267 spread on the same certified stone. Brilliant Earth lists it at $8,493. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.57
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685528891
Dimensions9.98 × 6.61 × 4.39 mm
L/W Ratio1.51
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.98 mm6.61 mm2.57 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685528891
Side View
Table 63.0%Crown 42.6°Girdle: MediumPavilion 34.5°Culet: NoneDepth 66.4%

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: $8,493 CAD|Low: $827 CAD|High: $8,703 CAD|Avg: $3,479 CAD|-2.4%
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 6$827 CAD
Retailer 11$1,226 CAD
Retailer 5$1,356 CAD
Retailer 10$1,373 CAD
Retailer 15$1,422 CAD
Retailer 12$1,443 CAD
Retailer 9$2,284 CAD
Retailer 2$3,376 CAD
Retailer 8$3,599 CAD
Retailer 14$3,960 CAD
Retailer 4$4,064 CAD
Retailer 7$4,557 CAD
Retailer 13$4,983 CAD
Retailer 3$5,054 CAD
Retailer 16$5,448 CAD
Brilliant Earth$8,493 CAD

25 data points across 16 retailers

13 retailers$1,226 CAD to $8,493 CAD

A
Cheapest Retailer
-
$1,226 CAD
$878 USD
A
Retailer 2
-
$1,356 CAD
$971 USD
View
A
Retailer 3
-
$1,373 CAD
$983 USD
View
Final sale: no returns
A
Retailer 4
-
$1,422 CAD
$1,018 USD
View
A
Retailer 5
-
$1,443 CAD
£813 GBP
View
A
Retailer 6
-
$2,284 CAD
$1,635 USD
View
A
Retailer 7
-
$3,376 CAD
A$3,718 AUD
View
B+
Retailer 8
-
$3,960 CAD
£2,232 GBP
View
B+
Retailer 9
-
$4,064 CAD
$2,909 USD
View
B+
Retailer 10
-
$4,983 CAD
$3,567 USD
View
Retailer 11
-
$5,054 CAD
A$5,566 AUD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
$5,448 CAD
£3,071 GBP
View
Most Expensive
B
Brilliant Earth
21535490A · Oct 31
$8,493 CAD
$6,080 USD
View
12 more retailers have this diamond
Prices start from $1,226 CADSave up to $7,267 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
2.57ct Radiant
$1,226 CAD