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Heart|Lab Grown|IGI

1.55ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG836620576

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836620576

Diamond specifications and retailer prices

From £478 GBP
$636 USD
As of October 27, 2026
Save £2,481 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,959 GBP at Brilliant Earth · As of October 28, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836620576 or 836620576. Listed at 18 retailers as of October 27, 2026, with prices from £478 to £2,959, a £2,481 spread on the same certified stone. Brilliant Earth lists it at £2,959. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620576
Dimensions7.97 × 7.15 × 4.48 mm
L/W Ratio1.11
Girdle conditionFaceted
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
7.97 mm7.15 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620576
Side View
Table 64.0%Crown 39.7°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 56.2%

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 27
Current: £2,959 GBP|Low: £478 GBP|High: £2,959 GBP|Avg: £1,385 GBP
Brilliant Earth
Retailer 2
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Retailer 18
October 29, 2026
Retailer 5£478 GBP
Retailer 16£520 GBP
Retailer 7£554 GBP
Retailer 8£554 GBP
Retailer 12£614 GBP
Retailer 15£687 GBP
Retailer 2£883 GBP
Retailer 4£885 GBP
Retailer 6£906 GBP
Retailer 11£1,018 GBP
Retailer 18£1,289 GBP
Retailer 9£1,558 GBP
Retailer 3£1,821 GBP
Retailer 10£1,913 GBP
Retailer 14£2,210 GBP
Retailer 13£2,344 GBP
Retailer 17£2,348 GBP
Brilliant Earth£2,959 GBP

38 data points across 18 retailers

18 retailers£478 GBP to £2,959 GBP

A
Cheapest Retailer
-
£478 GBP
$636 USD
A
Retailer 2
-
£520 GBP
$692 USD
View
A
Retailer 3
-
£554 GBP
$738 USD
View
A
Retailer 4
-
£554 GBP
$738 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£614 GBP
$817 USD
View
Final sale: no returns
A
Retailer 6
-
£687 GBP
$915 USD
View
A
Retailer 7
-
£883 GBP
View
A
Retailer 8
-
£885 GBP
$1,179 USD
View
A
Retailer 9
-
£906 GBP
$1,206 USD
View
B+
Retailer 10
-
£1,018 GBP
ZAR 21,910 ZAR
View
B+
Retailer 11
-
£1,289 GBP
$1,717 USD
View
B+
Retailer 12
-
£1,558 GBP
$2,075 USD
View
B+
Retailer 13
-
£1,821 GBP
$2,425 USD
View
B
Retailer 14
-
£1,913 GBP
$2,548 USD
View
B
Retailer 15
-
£2,210 GBP
SGD 3,977 SGD
View
B
Retailer 16
-
£2,344 GBP
$3,122 USD
View
B
Retailer 17
-
£2,348 GBP
View
Most Expensive
B
Brilliant Earth
21433409A · Oct 28
£2,959 GBP
$3,940 USD
View
17 more retailers have this diamond
Prices start from £478 GBPSave up to £2,481 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
£478 GBP