Princess|Lab Grown|IGI

1.21ct E IF Princess Lab Grown Diamond

ID • E/IF • IGI LG715553368

Shape and cutting style on the report: Princess cut

Certificate IGI LG715553368

Diamond specifications and retailer prices

From £291 GBP
$390 USD
As of October 30, 2026
Save £1,149 GBP (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,440 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown princess diamond

This 1.21ct lab-grown princess sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG715553368 or 715553368. Listed at 23 retailers as of October 29, 2026, with prices from £291 to £1,440, a £1,149 spread on the same certified stone. Brilliant Earth lists it at £1,440. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG715553368
Dimensions5.84 × 5.73 × 4.07 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.84 mm5.73 mm1.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG715553368
Side View
Table 70.0%Crown 43.9°Girdle: MediumPavilion 37.2°Culet: NoneDepth 71.0%

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: Oct 30
Current: £1,440 GBP|Low: £289 GBP|High: £1,440 GBP|Avg: £755 GBP
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 12£291 GBP
Retailer 3£326 GBP
Retailer 21£326 GBP
Retailer 7£361 GBP
Retailer 14£361 GBP
Retailer 13£383 GBP
Retailer 22£470 GBP
Retailer 6£534 GBP
Retailer 9£573 GBP
Retailer 20£621 GBP
Retailer 4£623 GBP
Retailer 18£635 GBP
Retailer 16£653 GBP
Retailer 17£880 GBP
Retailer 8£908 GBP
Retailer 2£961 GBP
Retailer 5£1,101 GBP
Retailer 11£1,161 GBP
Retailer 15£1,189 GBP
Retailer 10£1,344 GBP
Retailer 19£1,419 GBP
Brilliant Earth£1,440 GBP

27 data points across 22 retailers

23 retailers£291 GBP to £1,440 GBP

A
Cheapest Retailer
-
£291 GBP
$390 USD
A
Retailer 2
-
£326 GBP
$437 USD
View
Final sale: no returns
A
Retailer 3
-
£326 GBP
$437 USD
View
A
Retailer 4
-
£361 GBP
$484 USD
View
A
Retailer 5
-
£361 GBP
$484 USD
View
A
Retailer 6
-
£383 GBP
View
A
Retailer 7
-
£470 GBP
$630 USD
View
A
Retailer 8
-
£534 GBP
$716 USD
View
B+
Retailer 9
-
£573 GBP
$768 USD
View
B+
Retailer 10
-
£621 GBP
ZAR 13,434 ZAR
View
B+
Retailer 11
-
£623 GBP
$835 USD
View
B+
Retailer 12
-
£635 GBP
€810 EUR
View
B+
Retailer 13
-
£653 GBP
View
B+
Retailer 14
-
£880 GBP
A$1,814 AUD
View
B+
Retailer 15
-
£908 GBP
$1,216 USD
View
B+
Retailer 16
-
£961 GBP
A$1,980 AUD
View
B
Retailer 17
-
£1,101 GBP
$1,475 USD
View
B
Retailer 18
-
£1,161 GBP
$1,556 USD
View
B
Retailer 19
-
£1,189 GBP
$1,593 USD
View
B
Retailer 20
-
£1,344 GBP
$1,801 USD
View
B
Retailer 21
-
£1,387 GBP
$1,859 USD
View
B
Retailer 22
-
£1,419 GBP
View
Most Expensive
B
Brilliant Earth
14755050A · Oct 29
£1,440 GBP
$1,930 USD
View
22 more retailers have this diamond
Prices start from £291 GBPSave up to £1,149 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
1.21ct Princess
£291 GBP