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Round|Lab Grown|IGI

1.55ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG815609356

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815609356

Diamond specifications and retailer prices

From £258 GBP
$346 USD
As of November 1, 2026
Save £2,507 GBP (91%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,765 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815609356 or 815609356. Listed at 23 retailers as of November 1, 2026, with prices from £258 to £2,765, a £2,507 spread on the same certified stone. Brilliant Earth lists it at £2,765. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815609356
Dimensions7.47 × 7.49 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.47 mm7.49 mm1.55 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815609356
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

Caratlytics Score

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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: Nov 1
Current: £2,765 GBP|Low: £258 GBP|High: £2,765 GBP|Avg: £874 GBP
Brilliant Earth
Retailer 2
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Retailer 22
November 3, 2026
Retailer 14£258 GBP
Retailer 8£299 GBP
Retailer 3£319 GBP
Retailer 11£319 GBP
Retailer 6£353 GBP
Retailer 22£426 GBP
Retailer 21£432 GBP
Retailer 13£502 GBP
Retailer 4£510 GBP
Retailer 16£551 GBP
Retailer 2£567 GBP
Retailer 12£677 GBP
Retailer 19£741 GBP
Retailer 18£742 GBP
Retailer 5£1,026 GBP
Retailer 7£1,031 GBP
Retailer 10£1,058 GBP
Retailer 15£1,209 GBP
Retailer 17£1,247 GBP
Retailer 9£1,378 GBP
Retailer 20£1,464 GBP
Brilliant Earth£2,765 GBP

34 data points across 22 retailers

23 retailers£258 GBP to £2,765 GBP

A
Cheapest Retailer
-
£258 GBP
$346 USD
A
Retailer 2
-
£299 GBP
$401 USD
View
Retailer 3
-
£319 GBP
$428 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£319 GBP
$428 USD
View
A
Retailer 5
-
£353 GBP
HK$3,700 HKD
View
A
Retailer 6
-
£426 GBP
$572 USD
View
A
Retailer 7
-
£432 GBP
$580 USD
View
A
Retailer 8
-
£502 GBP
€641 EUR
View
A
Retailer 9
-
£510 GBP
$685 USD
View
A
Retailer 10
-
£551 GBP
ZAR 11,937 ZAR
View
A
Retailer 11
-
£567 GBP
View
B+
Retailer 12
-
£677 GBP
$909 USD
View
B+
Retailer 13
-
£741 GBP
A$1,530 AUD
View
B+
Retailer 14
-
£742 GBP
$996 USD
View
B+
Retailer 15
-
£1,026 GBP
$1,377 USD
View
B+
Retailer 16
-
£1,031 GBP
SGD 1,870 SGD
View
B+
Retailer 17
-
£1,058 GBP
$1,420 USD
View
B
Retailer 18
-
£1,150 GBP
$1,543 USD
View
B
Retailer 19
-
£1,209 GBP
$1,622 USD
View
B+
Retailer 20
-
£1,247 GBP
View
B
Retailer 21
-
£1,378 GBP
$1,849 USD
View
B
Retailer 22
-
£1,464 GBP
$1,965 USD
View
Most Expensive
B
Brilliant Earth
20763193A · Nov 2
£2,765 GBP
$3,710 USD
View
22 more retailers have this diamond
Prices start from £258 GBPSave up to £2,507 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
£258 GBP