Princess|Lab Grown|IGI

1.28ct E IF Princess Lab Grown Diamond

ID • E/IF • IGI LG739529587

Shape and cutting style on the report: Princess cut

Certificate IGI LG739529587

Diamond specifications and retailer prices

From £272 GBP
$364 USD
As of October 30, 2026
Save £2,139 GBP (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,411 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown princess diamond

This 1.28ct lab-grown princess sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739529587 or 739529587. Listed at 22 retailers as of October 30, 2026, with prices from £272 to £2,411, a £2,139 spread on the same certified stone. Do Amore Diamonds lists it at £2,411. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739529587
Dimensions5.95 × 5.91 × 4.17 mm
L/W Ratio1.01
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
5.95 mm5.91 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739529587
Side View
Table 69.0%Crown 44.7°Girdle: MediumPavilion 37.6°Culet: NoneDepth 70.6%

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: £2,411 GBP|Low: £268 GBP|High: £2,478 GBP|Avg: £812 GBP|-2.7%
Do Amore Diamonds
Retailer 2
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October 30, 2026
Retailer 9£272 GBP
Retailer 10£304 GBP
Retailer 22£315 GBP
Retailer 5£337 GBP
Retailer 21£337 GBP
Retailer 2£395 GBP
Retailer 20£448 GBP
Retailer 15£459 GBP
Retailer 6£519 GBP
Retailer 7£525 GBP
Retailer 11£539 GBP
Retailer 13£611 GBP
Retailer 18£639 GBP
Retailer 16£907 GBP
Retailer 3£988 GBP
Retailer 19£1,101 GBP
Retailer 4£1,196 GBP
Retailer 12£1,276 GBP
Retailer 8£1,310 GBP
Retailer 14£1,337 GBP
Retailer 17£1,462 GBP
Do Amore Diamonds£2,411 GBP

31 data points across 22 retailers

22 retailers£272 GBP to £2,411 GBP

A
Cheapest Retailer
-
£272 GBP
$364 USD
A
Retailer 2
-
£304 GBP
$407 USD
View
Final sale: no returns
A
Retailer 3
-
£315 GBP
$422 USD
View
A
Retailer 4
-
£337 GBP
$452 USD
View
A
Retailer 5
-
£337 GBP
$452 USD
View
A
Retailer 6
-
£395 GBP
View
A
Retailer 7
-
£448 GBP
$600 USD
View
A
Retailer 8
-
£459 GBP
HK$4,800 HKD
View
A
Retailer 9
-
£519 GBP
$696 USD
View
A
Retailer 10
-
£525 GBP
$704 USD
View
A
Retailer 11
-
£539 GBP
$722 USD
View
A
Retailer 12
-
£611 GBP
View
A
Retailer 13
-
£639 GBP
ZAR 13,836 ZAR
View
B+
Retailer 14
-
£907 GBP
A$1,869 AUD
View
B+
Retailer 15
-
£988 GBP
$1,324 USD
View
B+
Retailer 16
-
£1,101 GBP
$1,475 USD
View
B+
Retailer 17
-
£1,196 GBP
$1,602 USD
View
B+
Retailer 18
-
£1,276 GBP
$1,710 USD
View
B+
Retailer 19
-
£1,310 GBP
$1,755 USD
View
B+
Retailer 20
-
£1,337 GBP
SGD 2,420 SGD
View
B+
Retailer 21
-
£1,462 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B405995DF · Oct 30
£2,411 GBP
$3,230 USD
View
21 more retailers have this diamond
Prices start from £272 GBPSave up to £2,139 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
1.28ct Princess
£272 GBP