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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 $320 NZD
$180 USD
As of November 2, 2026
Save $1,884 NZD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,204 NZD 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 $320 to $2,204, a $1,884 spread on the same certified stone. Brilliant Earth lists it at $2,204. 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: $2,204 NZD|Low: $320 NZD|High: $2,524 NZD|Avg: $967 NZD|-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 2, 2026
Retailer 12$320 NZD
Retailer 9$371 NZD
Retailer 4$396 NZD
Retailer 5$396 NZD
Retailer 11$510 NZD
Retailer 3$702 NZD
Retailer 7$711 NZD
Retailer 2$714 NZD
Retailer 10$988 NZD
Retailer 14$1,004 NZD
Retailer 13$1,274 NZD
Retailer 6$1,345 NZD
Retailer 8$1,864 NZD
Brilliant Earth$2,204 NZD

38 data points across 14 retailers

14 retailers$320 NZD to $2,204 NZD

A
Cheapest Retailer
-
$320 NZD
$180 USD
A
Retailer 2
-
$371 NZD
$209 USD
View
A
Retailer 3
-
$396 NZD
$223 USD
View
Retailer 4
-
$396 NZD
$223 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$702 NZD
$395 USD
View
A
Retailer 6
-
$711 NZD
€381 EUR
View
A
Retailer 7
-
$714 NZD
£316 GBP
View
A
Retailer 8
-
$988 NZD
$556 USD
View
A
Retailer 9
-
$1,004 NZD
$565 USD
View
B+
Retailer 10
-
$1,274 NZD
$717 USD
View
B+
Retailer 11
-
$1,345 NZD
$757 USD
View
B+
Retailer 12
-
$1,359 NZD
£602 GBP
View
B+
Retailer 13
-
$1,864 NZD
£826 GBP
View
Most Expensive
B
Brilliant Earth
9016409A · Nov 2
$2,204 NZD
$1,240 USD
View
13 more retailers have this diamond
Prices start from $320 NZDSave up to $1,884 NZD

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
$320 NZD