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Radiant|Lab Grown|IGI

1.70ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG617427460

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

Certificate IGI LG617427460

Diamond specifications and retailer prices

From $257 AUD
$180 USD
As of November 2, 2026
Save $1,513 AUD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,769 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 LG617427460 or 617427460. Listed at 14 retailers as of November 2, 2026, with prices from $257 to $1,769, a $1,513 spread on the same certified stone. Brilliant Earth lists it at $1,769. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617427460
Dimensions8.33 × 5.89 × 4.02 mm
L/W Ratio1.41
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
8.33 mm5.89 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617427460
Side View
Table 65.0%Crown 43.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.3%

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: Nov 2
Current: $1,769 AUD|Low: $257 AUD|High: $2,026 AUD|Avg: $776 AUD|-12.7%
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
November 3, 2026
Retailer 12$257 AUD
Retailer 9$298 AUD
Retailer 4$318 AUD
Retailer 5$318 AUD
Retailer 11$410 AUD
Retailer 3$564 AUD
Retailer 8$571 AUD
Retailer 2$573 AUD
Retailer 10$793 AUD
Retailer 14$806 AUD
Retailer 13$1,023 AUD
Retailer 6$1,080 AUD
Retailer 7$1,488 AUD
Brilliant Earth$1,769 AUD

38 data points across 14 retailers

14 retailers$257 AUD to $1,769 AUD

A
Cheapest Retailer
-
$257 AUD
$180 USD
A
Retailer 2
-
$298 AUD
$209 USD
View
A
Retailer 3
-
$318 AUD
$223 USD
View
Retailer 4
-
$318 AUD
$223 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$564 AUD
$395 USD
View
A
Retailer 6
-
$571 AUD
€381 EUR
View
A
Retailer 7
-
$573 AUD
£316 GBP
View
A
Retailer 8
-
$793 AUD
$556 USD
View
A
Retailer 9
-
$806 AUD
$565 USD
View
B+
Retailer 10
-
$1,023 AUD
$717 USD
View
B+
Retailer 11
-
$1,080 AUD
$757 USD
View
B+
Retailer 12
-
$1,091 AUD
£602 GBP
View
B+
Retailer 13
-
$1,488 AUD
£821 GBP
View
Most Expensive
B
Brilliant Earth
9016409A · Nov 2
$1,769 AUD
$1,240 USD
View
13 more retailers have this diamond
Prices start from $257 AUDSave up to $1,513 AUD

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
$257 AUD