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Radiant|Lab Grown|IGI

1.70ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1

Diamond specifications and retailer prices

From $446 CAD
£251 GBP
As of October 29, 2026
Save $1,001 CAD (69%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,447 CAD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 2 retailers as of October 29, 2026, with prices from $446 to $1,447, a $1,001 spread on the same certified stone. Blue Nile lists it at $1,447. 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

1.70
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.33 × 5.86 × 3.98 mm
L/W Ratio1.42
Top View
8.33 mm5.86 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 63.0%CrownGirdle: MediumPavilionCulet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $1,447 CAD|Low: $263 CAD|High: $1,447 CAD|Avg: $729 CAD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 4$263 CAD
Retailer 5$305 CAD
Retailer 2$446 CAD
Retailer 3$1,157 CAD
Blue Nile$1,447 CAD

18 data points across 5 retailers

2 retailers$446 CAD to $1,447 CAD

A
Cheapest Retailer
-
$446 CAD
£251 GBP
Most Expensive
B
Blue Nile
20299559 · Oct 29
$1,447 CAD
$1,036 USD
View
1 more retailer has this diamond
Prices start from $446 CADSave up to $1,001 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
1.70ct Radiant
$446 CAD