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Princess|Lab Grown|IGI

1.80ct G SI1 Princess Lab Grown Diamond

ID • G/SI1 • IGI LG526278802

Shape and cutting style on the report: Princess cut

Certificate IGI LG526278802

Diamond specifications and retailer prices

From £963 GBP
$1,290 USD
As of October 30, 2026
Save £1,729 GBP (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,999 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.8ct lab-grown princess diamond

This 1.8ct 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 LG526278802 or 526278802. Listed at 13 retailers as of October 30, 2026, with a 180% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.80
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526278802
Dimensions6.74 × 6.68 × 4.72 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
6.74 mm6.68 mm1.80 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG526278802
Side View
Table 69.5%Crown 38.5°Girdle: MediumPavilion 39.5°Culet: NoneDepth 70.7%

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: £2,200 GBP|Low: £963 GBP|High: £4,631 GBP|Avg: £2,530 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2£963 GBP
Retailer 5£1,379 GBP
Retailer 7£1,544 GBP
Retailer 8£1,724 GBP
Retailer 1£2,200 GBP
Retailer 6£2,509 GBP
Retailer 4£2,691 GBP
Retailer 9£4,352 GBP
Retailer 3£4,594 GBP

41 data points across 9 retailers

13 retailers£963 GBP to £2,691 GBP

B+
Cheapest Retailer
-
£963 GBP
$1,290 USD
B
Retailer 2
-
£1,379 GBP
$1,848 USD
View
B
Retailer 3
-
£1,501 GBP
$2,011 USD
View
B
Retailer 4
-
£1,544 GBP
$2,069 USD
View
Final sale: no returns
Retailer 5
-
£1,600 GBP
$2,144 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
£1,600 GBP
$2,144 USD
View
B
Retailer 7
-
£1,724 GBP
$2,310 USD
View
B
Retailer 8
-
£2,200 GBP
View
B
Retailer 9
-
£2,509 GBP
$3,362 USD
View
B
Retailer 10
-
£2,691 GBP
$3,606 USD
View
Most Expensive
NZ Jewellers
46412a99-3db6-4cf2-83f0-39430ec02780 · Oct 31
£2,999 GBP
$4,018 USD
View
Price under review
10 more retailers have this diamond
Prices start from £963 GBPSave up to £1,729 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+
1.80ct Princess
£963 GBP