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Princess|Lab Grown|IGI

1.09ct D IF Princess Lab Grown Diamond

ID • D/IF • IGI LG731589812

Shape and cutting style on the report: Princess cut

Certificate IGI LG731589812

Diamond specifications and retailer prices

From £262 GBP
$351 USD
As of October 30, 2026
Save £1,484 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,746 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown princess diamond

This 1.09ct lab-grown princess sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731589812 or 731589812. Listed at 23 retailers as of October 30, 2026, with prices from £262 to £1,746, a £1,484 spread on the same certified stone. Brilliant Earth lists it at £1,746. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731589812
Dimensions5.75 × 5.64 × 3.77 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.75 mm5.64 mm1.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731589812
Side View
Table 66.0%Crown 40.4°Girdle: MED-STKPavilion 37°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,746 GBP|Low: £257 GBP|High: £1,888 GBP|Avg: £774 GBP|-7.5%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 9£262 GBP
Retailer 10£293 GBP
Retailer 21£304 GBP
Retailer 4£325 GBP
Retailer 11£325 GBP
Retailer 13£334 GBP
Retailer 22£404 GBP
Retailer 20£437 GBP
Retailer 14£466 GBP
Retailer 17£536 GBP
Retailer 19£557 GBP
Retailer 16£583 GBP
Retailer 18£788 GBP
Retailer 5£868 GBP
Retailer 15£993 GBP
Retailer 7£1,043 GBP
Retailer 3£1,045 GBP
Retailer 12£1,074 GBP
Retailer 6£1,249 GBP
Retailer 8£1,263 GBP
Retailer 2£1,267 GBP
Brilliant Earth£1,746 GBP

35 data points across 22 retailers

23 retailers£262 GBP to £1,746 GBP

A
Cheapest Retailer
-
£262 GBP
$351 USD
A
Retailer 2
-
£293 GBP
$392 USD
View
Final sale: no returns
A
Retailer 3
-
£304 GBP
$407 USD
View
Retailer 4
-
£325 GBP
$435 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£325 GBP
$435 USD
View
A
Retailer 6
-
£334 GBP
View
A
Retailer 7
-
£404 GBP
$541 USD
View
A
Retailer 8
-
£437 GBP
$585 USD
View
A
Retailer 9
-
£466 GBP
$625 USD
View
A
Retailer 10
-
£536 GBP
€684 EUR
View
A
Retailer 11
-
£557 GBP
ZAR 12,065 ZAR
View
B+
Retailer 12
-
£583 GBP
View
B+
Retailer 13
-
£788 GBP
A$1,624 AUD
View
B+
Retailer 14
-
£868 GBP
$1,163 USD
View
Retailer 15
-
£993 GBP
A$2,046 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
£1,043 GBP
$1,397 USD
View
Retailer 17
-
£1,045 GBP
$1,400 USD
View
Price last confirmed 14 days ago
B
Retailer 18
-
£1,074 GBP
$1,439 USD
View
B
Retailer 19
-
£1,249 GBP
$1,674 USD
View
B
Retailer 20
-
£1,263 GBP
View
B
Retailer 21
-
£1,267 GBP
$1,697 USD
View
B
Retailer 22
-
£1,267 GBP
View
Most Expensive
B
Brilliant Earth
15765517A · Oct 31
£1,746 GBP
$2,340 USD
View
22 more retailers have this diamond
Prices start from £262 GBPSave up to £1,484 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
1.09ct Princess
£262 GBP