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Princess|Lab Grown|IGI

1.71ct J SI1 Princess Lab Grown Diamond

ID • J/SI1 • IGI LG447001591

Shape and cutting style on the report: Princess cut

Certificate IGI LG447001591

Diamond specifications and retailer prices

From $960 USD
As of November 4, 2026
Save $4,454 USD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,414 USD at MOH London · As of November 5, 2026
View at MOH London

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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001591 or 447001591. Listed at 11 retailers as of November 4, 2026, with prices from $960 to $5,414, a $4,454 spread on the same certified stone. MOH London lists it at $5,414. 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
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001591
Dimensions6.52 × 6.36 × 4.69 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
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Top View
6.52 mm6.36 mm1.71 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001591
Side View
Table 69.5%Crown 44.3°Girdle: MediumPavilion 38.3°Culet: NoneDepth 73.7%

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 4
Current: $5,414 USD|Low: $960 USD|High: $5,494 USD|Avg: $2,884 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2$960 USD
Retailer 4$1,638 USD
Retailer 6$1,834 USD
Retailer 9$1,874 USD
Retailer 7$2,070 USD
Retailer 8$2,553 USD
Retailer 5$2,988 USD
Retailer 3$3,277 USD
MOH London$5,414 USD
Retailer 10$5,441 USD

14 data points across 10 retailers

11 retailers$960 USD to $5,414 USD

A
Cheapest Retailer
-
$960 USD
B+
Retailer 2
-
$1,638 USD
View
B+
Retailer 3
-
$1,783 USD
View
B+
Retailer 4
-
$1,834 USD
View
Final sale: no returns
Retailer 5
-
$1,901 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$1,901 USD
View
B+
Retailer 7
-
$2,070 USD
View
B
Retailer 8
-
$2,988 USD
View
B
Retailer 9
-
$3,277 USD
View
B
Retailer 10
-
$3,562 USD
View
Most Expensive
B
MOH London
LG447001591 · Nov 5
$5,414 USD
£4,263 GBP
View
10 more retailers have this diamond
Prices start from $960 USDSave up to $4,454 USD

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
$960 USD