CaratHunter
Plans
Heart|Lab Grown|IGI

1.55ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG635426777

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG635426777

Diamond specifications and retailer prices

From £231 GBP
$309 USD
As of October 30, 2026
Save £2,008 GBP (90%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,239 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown heart diamond

This 1.55ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG635426777 or 635426777. Listed at 8 retailers as of October 30, 2026, with prices from £231 to £2,239, a £2,008 spread on the same certified stone. Brilliant Earth lists it at £2,239. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635426777
Dimensions8.03 × 6.96 × 4.68 mm
L/W Ratio1.15
Girdle conditionFaceted
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
8.03 mm6.96 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635426777
Side View
Table 57.0%Crown 39.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 58.3%

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: £2,239 GBP|Low: £163 GBP|High: £2,739 GBP|Avg: £783 GBP|-18.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10£231 GBP
Retailer 8£373 GBP
Retailer 6£421 GBP
Retailer 11£433 GBP
Retailer 5£452 GBP
Retailer 12£457 GBP
Retailer 7£593 GBP
Retailer 9£631 GBP
Retailer 4£858 GBP
Retailer 2£1,027 GBP
Retailer 3£1,292 GBP
Brilliant Earth£2,239 GBP

28 data points across 12 retailers

8 retailers£231 GBP to £2,239 GBP

A
Cheapest Retailer
-
£231 GBP
$309 USD
Final sale: no returns
A
Retailer 2
-
£373 GBP
$500 USD
View
A
Retailer 3
-
£421 GBP
$564 USD
View
A
Retailer 4
-
£452 GBP
$605 USD
View
A
Retailer 5
-
£593 GBP
A$1,223 AUD
View
A
Retailer 6
-
£631 GBP
$845 USD
View
B+
Retailer 7
-
£1,027 GBP
View
Most Expensive
B
Brilliant Earth
15304938A · Oct 30
£2,239 GBP
$3,000 USD
View
7 more retailers have this diamond
Prices start from £231 GBPSave up to £2,008 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
1.55ct Heart
£231 GBP