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Round|Lab Grown|IGI

1.55ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG836620540

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836620540

Diamond specifications and retailer prices

From £308 GBP
$413 USD
As of October 29, 2026
Save £1,558 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,015 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round 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 LG836620540 or 836620540. Listed at 20 retailers as of October 29, 2026, with a 505% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620540
Dimensions7.39 × 7.34 × 4.57 mm
L/W Ratio1.01
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
7.39 mm7.34 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620540
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A+
Exceptional
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 29
Current: £2,015 GBP|Low: £308 GBP|High: £2,015 GBP|Avg: £855 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
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Retailer 8
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Retailer 10
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Retailer 12
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Retailer 20
October 30, 2026
Retailer 7£308 GBP
Retailer 4£346 GBP
Retailer 9£346 GBP
Retailer 12£383 GBP
Retailer 19£383 GBP
Retailer 18£493 GBP
Retailer 16£599 GBP
Retailer 5£605 GBP
Retailer 14£628 GBP
Retailer 17£657 GBP
Retailer 8£711 GBP
Retailer 6£915 GBP
Retailer 11£1,230 GBP
Retailer 20£1,254 GBP
Retailer 10£1,255 GBP
Retailer 3£1,278 GBP
Retailer 13£1,375 GBP
Retailer 15£1,412 GBP
Retailer 2£1,866 GBP
Rare Carat£2,015 GBP

24 data points across 20 retailers

20 retailers£308 GBP to £1,866 GBP

A+
Cheapest Retailer
-
£308 GBP
$413 USD
A
Retailer 2
-
£346 GBP
$463 USD
View
A
Retailer 3
-
£346 GBP
$463 USD
View
Final sale: no returns
A
Retailer 4
-
£383 GBP
$513 USD
View
A
Retailer 5
-
£383 GBP
$513 USD
View
A
Retailer 6
-
£493 GBP
$660 USD
View
A
Retailer 7
-
£599 GBP
€765 EUR
View
A
Retailer 8
-
£605 GBP
$811 USD
View
A
Retailer 9
-
£628 GBP
View
A
Retailer 10
-
£657 GBP
ZAR 14,228 ZAR
View
A
Retailer 11
-
£711 GBP
$952 USD
View
B+
Retailer 12
-
£915 GBP
$1,226 USD
View
B+
Retailer 13
-
£1,230 GBP
$1,648 USD
View
B+
Retailer 14
-
£1,254 GBP
SGD 2,271 SGD
View
B+
Retailer 15
-
£1,255 GBP
$1,682 USD
View
B+
Retailer 16
-
£1,278 GBP
$1,712 USD
View
B+
Retailer 17
-
£1,375 GBP
$1,843 USD
View
B+
Retailer 18
-
£1,412 GBP
View
B
Retailer 19
-
£1,866 GBP
$2,500 USD
View
Most Expensive
Rare Carat
JH-241503 · Oct 21
£2,015 GBP
$2,700 USD
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from £308 GBPSave up to £1,558 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 Round
£308 GBP