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Radiant|Lab Grown|IGI

1.71ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG578353116

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

Certificate IGI LG578353116

Diamond specifications and retailer prices

From $323 NZD
$182 USD
As of October 27, 2026
Save $2,787 NZD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,110 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.71ct lab-grown radiant diamond

This 1.71ct 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 LG578353116 or 578353116. Listed at 9 retailers as of October 27, 2026, with prices from $323 to $3,110, a $2,787 spread on the same certified stone. Do Amore Diamonds lists it at $3,110. 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

1.71
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578353116
Dimensions8.51 × 5.72 × 3.89 mm
L/W Ratio1.49
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
8.51 mm5.72 mm1.71 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578353116
Side View
Table 65.0%Crown 46.1°Girdle: MediumPavilion 35°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $3,110 NZD|Low: $259 NZD|High: $3,235 NZD|Avg: $1,331 NZD|-3.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 6$323 NZD
Retailer 3$375 NZD
Retailer 9$377 NZD
Retailer 5$709 NZD
Retailer 4$1,363 NZD
Retailer 8$1,415 NZD
Retailer 7$1,424 NZD
Retailer 2$2,081 NZD
Do Amore Diamonds$3,110 NZD

21 data points across 9 retailers

9 retailers$323 NZD to $3,110 NZD

A
Cheapest Retailer
-
$323 NZD
$182 USD
A
Retailer 2
-
$375 NZD
$211 USD
View
A
Retailer 3
-
$377 NZD
$212 USD
View
Final sale: no returns
B+
Retailer 4
-
$709 NZD
$399 USD
View
Retailer 5
-
$1,363 NZD
$767 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$1,415 NZD
$796 USD
View
B+
Retailer 7
-
$1,424 NZD
$801 USD
View
B
Retailer 8
-
$2,081 NZD
£922 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9AEFA5AC9 · Oct 29
$3,110 NZD
$1,750 USD
View
8 more retailers have this diamond
Prices start from $323 NZDSave up to $2,787 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
1.71ct Radiant
$323 NZD