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Princess|Lab Grown|IGI

1.71ct G SI1 Princess Lab Grown Diamond

ID • G/SI1 • IGI LG499123056

Shape and cutting style on the report: Princess cut

Certificate IGI LG499123056

Diamond specifications and retailer prices

From £281 GBP
$376 USD
As of October 30, 2026
Save £1,943 GBP (87%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,224 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499123056 or 499123056. Listed at 9 retailers as of October 30, 2026, with prices from £281 to £2,224, a £1,943 spread on the same certified stone. Do Amore Diamonds lists it at £2,224. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499123056
Dimensions6.62 × 6.58 × 4.57 mm
L/W Ratio1.01
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
6.62 mm6.58 mm1.71 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499123056
Side View
Table 67.0%Crown 40.3°Girdle: MediumPavilion 38.3°Culet: NoneDepth 69.5%

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: Oct 30
Current: £2,224 GBP|Low: £201 GBP|High: £2,224 GBP|Avg: £805 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 26, 2026
Retailer 4£281 GBP
Retailer 9£310 GBP
Retailer 5£387 GBP
Retailer 3£502 GBP
Retailer 7£605 GBP
Retailer 8£636 GBP
Retailer 6£843 GBP
Retailer 10£927 GBP
Retailer 2£1,342 GBP
Do Amore Diamonds£2,224 GBP

10 data points across 10 retailers

9 retailers£281 GBP to £2,224 GBP

Retailer 1
-
£251 GBP
$336 USD
Price last confirmed 20 days ago
A
Retailer 2
-
£281 GBP
$376 USD
View
Final sale: no returns
Retailer 3
-
£291 GBP
$390 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£310 GBP
$416 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£387 GBP
$518 USD
View
B+
Retailer 6
-
£502 GBP
$673 USD
View
Retailer 7
-
£1,103 GBP
$1,478 USD
View
Price last confirmed 30 days ago
B
Retailer 8
-
£1,342 GBP
View
Most Expensive
B
Do Amore Diamonds
27-2F80CE9C6 · Oct 31
£2,224 GBP
$2,980 USD
View
8 more retailers have this diamond
Prices start from £281 GBPSave up to £1,943 GBP

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
£281 GBP