CaratHunter
Plans
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 €171 EUR
$192 USD
As of November 2, 2026
Save €961 EUR (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,132 EUR 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 €171 to €1,132, a €961 spread on the same certified stone. Brilliant Earth lists it at €1,132. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €1,132 EUR|Low: €171 EUR|High: €1,801 EUR|Avg: €617 EUR|-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€171 EUR
Retailer 2€272 EUR
Retailer 10€372 EUR
Retailer 4€384 EUR
Retailer 6€398 EUR
Retailer 3€449 EUR
Retailer 11€506 EUR
Retailer 8€687 EUR
Retailer 7€900 EUR
Retailer 5€995 EUR
Brilliant Earth€1,132 EUR

44 data points across 11 retailers

15 retailers€171 EUR to €1,132 EUR

A
Cheapest Retailer
-
€171 EUR
$192 USD
A
Retailer 2
-
€199 EUR
$223 USD
View
A
Retailer 3
-
€213 EUR
$239 USD
View
Retailer 4
-
€213 EUR
$239 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
€272 EUR
£241 GBP
View
B+
Retailer 6
-
€372 EUR
$417 USD
View
A
Retailer 7
-
€384 EUR
£340 GBP
View
A
Retailer 8
-
€398 EUR
View
A
Retailer 9
-
€449 EUR
$504 USD
View
B+
Retailer 10
-
€506 EUR
$567 USD
View
B+
Retailer 11
-
€684 EUR
$767 USD
View
B
Retailer 12
-
€687 EUR
$770 USD
View
B
Retailer 13
-
€900 EUR
$1,010 USD
View
B
Retailer 14
-
€995 EUR
£879 GBP
View
Most Expensive
B
Brilliant Earth
13299720A · Nov 2
€1,132 EUR
$1,270 USD
View
14 more retailers have this diamond
Prices start from €171 EURSave up to €961 EUR

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
€171 EUR