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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 $274 AUD
$192 USD
As of November 2, 2026
Save $1,538 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,812 AUD 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 $274 to $1,812, a $1,538 spread on the same certified stone. Brilliant Earth lists it at $1,812. 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: $1,812 AUD|Low: $274 AUD|High: $2,882 AUD|Avg: $988 AUD|-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$274 AUD
Retailer 2$436 AUD
Retailer 10$595 AUD
Retailer 4$615 AUD
Retailer 6$637 AUD
Retailer 3$719 AUD
Retailer 11$809 AUD
Retailer 8$1,099 AUD
Retailer 7$1,441 AUD
Retailer 5$1,593 AUD
Brilliant Earth$1,812 AUD

43 data points across 11 retailers

15 retailers$274 AUD to $1,812 AUD

A
Cheapest Retailer
-
$274 AUD
$192 USD
A
Retailer 2
-
$318 AUD
$223 USD
View
A
Retailer 3
-
$341 AUD
$239 USD
View
Retailer 4
-
$341 AUD
$239 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$436 AUD
£241 GBP
View
B+
Retailer 6
-
$595 AUD
$417 USD
View
A
Retailer 7
-
$615 AUD
£340 GBP
View
A
Retailer 8
-
$637 AUD
€425 EUR
View
A
Retailer 9
-
$719 AUD
$504 USD
View
B+
Retailer 10
-
$809 AUD
$567 USD
View
B+
Retailer 11
-
$1,094 AUD
$767 USD
View
B
Retailer 12
-
$1,099 AUD
$770 USD
View
B
Retailer 13
-
$1,441 AUD
$1,010 USD
View
B
Retailer 14
-
$1,593 AUD
£879 GBP
View
Most Expensive
B
Brilliant Earth
13299720A · Nov 2
$1,812 AUD
$1,270 USD
View
14 more retailers have this diamond
Prices start from $274 AUDSave up to $1,538 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
1.71ct Princess
$274 AUD