Round|Lab Grown|IGI

1.55ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG830622671

Shape and cutting style on the report: Round brilliant

Certificate IGI LG830622671

Diamond specifications and retailer prices

From £402 GBP
$538 USD
As of October 30, 2026
Save £1,464 GBP (78%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,019 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 LG830622671 or 830622671. Listed at 20 retailers as of October 30, 2026, with a 365% 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 angle33.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830622671
Dimensions7.41 × 7.46 × 4.54 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
7.41 mm7.46 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830622671
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £2,019 GBP|Low: £402 GBP|High: £2,306 GBP|Avg: £1,128 GBP|-0.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 6£402 GBP
Retailer 16£625 GBP
Retailer 9£627 GBP
Retailer 12£670 GBP
Retailer 13£679 GBP
Retailer 4£728 GBP
Retailer 2£730 GBP
Retailer 15£764 GBP
Retailer 10£1,023 GBP
Retailer 7£1,036 GBP
Retailer 8£1,450 GBP
Retailer 5£1,548 GBP
Retailer 3£1,558 GBP
Retailer 14£1,642 GBP
Retailer 11£1,866 GBP
Rare Carat£2,019 GBP

27 data points across 16 retailers

20 retailers£402 GBP to £1,866 GBP

Retailer 1
-
£365 GBP
$489 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£402 GBP
$538 USD
View
Final sale: no returns
Retailer 3
-
£452 GBP
$606 USD
View
Price last confirmed 29 days ago
Retailer 4
-
£452 GBP
$606 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
£625 GBP
$838 USD
View
A
Retailer 6
-
£627 GBP
$840 USD
View
A
Retailer 7
-
£670 GBP
View
A
Retailer 8
-
£679 GBP
€866 EUR
View
A
Retailer 9
-
£728 GBP
$975 USD
View
A
Retailer 10
-
£730 GBP
View
A
Retailer 11
-
£764 GBP
ZAR 16,535 ZAR
View
B+
Retailer 12
-
£1,023 GBP
$1,371 USD
View
B+
Retailer 13
-
£1,036 GBP
$1,388 USD
View
Retailer 14
-
£1,190 GBP
$1,594 USD
View
Price last confirmed 23 days ago
B
Retailer 15
-
£1,450 GBP
$1,943 USD
View
B
Retailer 16
-
£1,548 GBP
$2,074 USD
View
B
Retailer 17
-
£1,558 GBP
$2,088 USD
View
B
Retailer 18
-
£1,642 GBP
View
B
Retailer 19
-
£1,866 GBP
$2,500 USD
View
Most Expensive
Rare Carat
C533-10A · Oct 21
£2,019 GBP
$2,705 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from £402 GBPSave up to £1,464 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
£402 GBP