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Round|Lab Grown|IGI

1.54ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG778659568

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778659568

Diamond specifications and retailer prices

From £156 GBP
As of November 3, 2026
Save £649 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £805 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778659568 or 778659568. Listed at 21 retailers as of November 3, 2026, with prices from £156 to £805, a £649 spread on the same certified stone. Brilliant Earth lists it at £805. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778659568
Dimensions7.54 × 7.51 × 4.46 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.54 mm7.51 mm1.54 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778659568
Side View
Table 60.0%Crown 33.2°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.3%

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 3
Current: £805 GBP|Low: £153 GBP|High: £954 GBP|Avg: £456 GBP|-10.0%
Brilliant Earth
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
Retailer 17
Retailer 18
November 2, 2026
Retailer 5£156 GBP
Retailer 17£174 GBP
Retailer 16£181 GBP
Retailer 13£194 GBP
Retailer 9£195 GBP
Retailer 7£334 GBP
Retailer 12£334 GBP
Retailer 10£344 GBP
Retailer 15£441 GBP
Retailer 2£451 GBP
Retailer 11£514 GBP
Retailer 8£570 GBP
Retailer 14£623 GBP
Retailer 18£628 GBP
Retailer 4£661 GBP
Retailer 3£784 GBP
Retailer 6£784 GBP
Brilliant Earth£805 GBP

35 data points across 18 retailers

21 retailers£156 GBP to £805 GBP

A
Cheapest Retailer
-
£156 GBP
Retailer 2
-
£159 GBP
View
Price last confirmed 47 days ago
A
Retailer 3
-
£174 GBP
View
Final sale: no returns
A
Retailer 4
-
£181 GBP
View
Retailer 5
-
£193 GBP
View
Price last confirmed 46 days ago
A
Retailer 6
-
£194 GBP
View
Retailer 7
-
£195 GBP
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£334 GBP
View
A
Retailer 9
-
£334 GBP
View
A
Retailer 10
-
£344 GBP
View
A
Retailer 11
-
£441 GBP
View
A
Retailer 12
-
£451 GBP
View
B+
Retailer 13
-
£514 GBP
View
B+
Retailer 14
-
£570 GBP
View
B+
Retailer 15
-
£623 GBP
View
B+
Retailer 16
-
£628 GBP
View
Retailer 17
-
£629 GBP
View
Price last confirmed 44 days ago
B+
Retailer 18
-
£661 GBP
View
B+
Retailer 19
-
£784 GBP
View
B+
Retailer 20
-
£784 GBP
View
Most Expensive
B+
Brilliant Earth
21501172A · Nov 3
£805 GBP
$1,080 USD
View
20 more retailers have this diamond
Prices start from £156 GBPSave up to £649 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
1.54ct Round
£156 GBP