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Radiant|Lab Grown|IGI

5.17ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG587318953

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

Certificate IGI LG587318953

Diamond specifications and retailer prices

From $3,542 CAD
$2,535 USD
As of October 31, 2026
Save $2,194 CAD (38%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $12,092 CAD at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 5.17ct lab-grown radiant diamond

This 5.17ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587318953 or 587318953. Listed at 3 retailers as of October 28, 2026, with a 62% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.17
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587318953
Dimensions11.77 × 8.60 × 5.89 mm
L/W Ratio1.37
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.77 mm8.60 mm5.17 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587318953
Side View
Table 66.0%Crown 46°Girdle: MediumPavilion 35.7°Culet: NoneDepth 68.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $12,092 CAD|Low: $3,542 CAD|High: $12,092 CAD|Avg: $7,192 CAD
Frank Darling
Retailer 2
Retailer 3
October 19, 2026
Retailer 3$3,542 CAD
Retailer 2$5,736 CAD
Frank Darling$12,092 CAD

4 data points across 3 retailers

3 retailers$3,542 CAD to $5,736 CAD

B
Cheapest Retailer
-
$3,542 CAD
$2,535 USD
B
Retailer 2
-
$5,736 CAD
$4,105 USD
View
Most Expensive
Frank Darling
LV34-4ABA · Oct 31
$12,092 CAD
$8,653 USD
View
Price under review
2 more retailers have this diamond
Prices start from $3,542 CADSave up to $2,194 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.

B
5.17ct Radiant
$3,542 CAD