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Princess|Lab Grown|IGI

1.71ct G SI1 Princess Lab Grown Diamond

GD • G/SI1 • IGI LG570367221

Shape and cutting style on the report: Princess cut

Certificate IGI LG570367221

Diamond specifications and retailer prices

From £204 GBP
$273 USD
As of October 30, 2026
Save £1,610 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,814 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 standard cut grade and certified by IGI LG570367221 or 570367221. Listed at 15 retailers as of October 30, 2026, with prices from £204 to £1,814, a £1,610 spread on the same certified stone. Do Amore Diamonds lists it at £1,814. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.71
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570367221
Dimensions6.45 × 6.38 × 4.60 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
6.45 mm6.38 mm1.71 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570367221
Side View
Table 67.0%Crown 41.9°Girdle: Slightly ThickPavilion 38.2°Culet: NoneDepth 72.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,814 GBP|Low: £253 GBP|High: £1,814 GBP|Avg: £719 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6£253 GBP
Retailer 8£355 GBP
Retailer 5£358 GBP
Retailer 9£419 GBP
Retailer 2£492 GBP
Retailer 3£669 GBP
Retailer 10£731 GBP
Retailer 7£777 GBP
Retailer 11£899 GBP
Retailer 4£1,125 GBP
Do Amore Diamonds£1,814 GBP

22 data points across 11 retailers

15 retailers£204 GBP to £1,814 GBP

Retailer 1
-
£186 GBP
$249 USD
Price last confirmed 18 days ago
B+
Retailer 2
-
£204 GBP
$273 USD
View
Retailer 3
-
£237 GBP
$317 USD
View
Price last confirmed 11 days ago
Retailer 4
-
£253 GBP
$339 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
£253 GBP
$339 USD
View
B+
Retailer 6
-
£355 GBP
$476 USD
View
B+
Retailer 7
-
£358 GBP
$480 USD
View
B+
Retailer 8
-
£419 GBP
$562 USD
View
B
Retailer 9
-
£492 GBP
View
B
Retailer 10
-
£669 GBP
$897 USD
View
B
Retailer 11
-
£731 GBP
$980 USD
View
B
Retailer 12
-
£777 GBP
$1,041 USD
View
B
Retailer 13
-
£899 GBP
$1,204 USD
View
B
Retailer 14
-
£1,125 GBP
View
Most Expensive
C
Do Amore Diamonds
27-E59DBDA97 · Oct 31
£1,814 GBP
$2,430 USD
View
14 more retailers have this diamond
Prices start from £204 GBPSave up to £1,610 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.

B+
1.71ct Princess
£204 GBP