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Princess|Lab Grown|IGI

1.71ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG657423845

Shape and cutting style on the report: Princess cut

Certificate IGI LG657423845

Diamond specifications and retailer prices

From $341 NZD
$192 USD
As of November 2, 2026
Save $1,916 NZD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,257 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.71ct lab-grown princess diamond

This 1.71ct lab-grown princess 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 LG657423845 or 657423845. Listed at 15 retailers as of November 2, 2026, with prices from $341 to $2,257, a $1,916 spread on the same certified stone. Brilliant Earth lists it at $2,257. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657423845
Dimensions6.71 × 6.46 × 4.27 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.71 mm6.46 mm1.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657423845
Side View
Table 76.0%Crown 44.5°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 66.1%

Caratlytics Score

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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: $2,257 NZD|Low: $341 NZD|High: $3,590 NZD|Avg: $1,229 NZD|-37.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$341 NZD
Retailer 2$543 NZD
Retailer 10$741 NZD
Retailer 4$766 NZD
Retailer 6$793 NZD
Retailer 3$896 NZD
Retailer 11$1,008 NZD
Retailer 8$1,369 NZD
Retailer 7$1,795 NZD
Retailer 5$1,984 NZD
Brilliant Earth$2,257 NZD

44 data points across 11 retailers

15 retailers$341 NZD to $2,257 NZD

A
Cheapest Retailer
-
$341 NZD
$192 USD
A
Retailer 2
-
$396 NZD
$223 USD
View
A
Retailer 3
-
$425 NZD
$239 USD
View
Retailer 4
-
$425 NZD
$239 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$543 NZD
£241 GBP
View
B+
Retailer 6
-
$741 NZD
$417 USD
View
A
Retailer 7
-
$766 NZD
£340 GBP
View
A
Retailer 8
-
$793 NZD
€425 EUR
View
A
Retailer 9
-
$896 NZD
$504 USD
View
B+
Retailer 10
-
$1,008 NZD
$567 USD
View
B+
Retailer 11
-
$1,363 NZD
$767 USD
View
B
Retailer 12
-
$1,369 NZD
$770 USD
View
B
Retailer 13
-
$1,795 NZD
$1,010 USD
View
B
Retailer 14
-
$1,984 NZD
£879 GBP
View
Most Expensive
B
Brilliant Earth
13299720A · Nov 2
$2,257 NZD
$1,270 USD
View
14 more retailers have this diamond
Prices start from $341 NZDSave up to $1,916 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 Princess
$341 NZD