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Round|Lab Grown|IGI

1.54ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG818681800

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818681800

Diamond specifications and retailer prices

From £160 GBP
As of November 3, 2026
Save £690 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £850 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 LG818681800 or 818681800. Listed at 19 retailers as of November 3, 2026, with prices from £160 to £850, a £690 spread on the same certified stone. Brilliant Earth lists it at £850. 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 angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681800
Dimensions7.34 × 7.37 × 4.57 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
7.34 mm7.37 mm1.54 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681800
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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: Nov 3
Current: £850 GBP|Low: £155 GBP|High: £850 GBP|Avg: £422 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
Retailer 12
Retailer 13
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Retailer 19
November 3, 2026
Retailer 10£160 GBP
Retailer 8£178 GBP
Retailer 4£185 GBP
Retailer 7£198 GBP
Retailer 18£198 GBP
Retailer 2£307 GBP
Retailer 16£339 GBP
Retailer 13£342 GBP
Retailer 19£345 GBP
Retailer 15£444 GBP
Retailer 17£462 GBP
Retailer 12£526 GBP
Retailer 11£574 GBP
Retailer 3£636 GBP
Retailer 9£641 GBP
Retailer 6£676 GBP
Retailer 14£792 GBP
Retailer 5£804 GBP
Brilliant Earth£850 GBP

32 data points across 19 retailers

19 retailers£160 GBP to £850 GBP

A
Cheapest Retailer
-
£160 GBP
A
Retailer 2
-
£178 GBP
View
Final sale: no returns
A
Retailer 3
-
£185 GBP
View
Retailer 4
-
£198 GBP
View
Price last confirmed 10 days ago
A
Retailer 5
-
£198 GBP
View
A
Retailer 6
-
£307 GBP
View
B+
Retailer 7
-
£339 GBP
View
A
Retailer 8
-
£342 GBP
View
A
Retailer 9
-
£345 GBP
View
A
Retailer 10
-
£444 GBP
View
Retailer 11
-
£462 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£526 GBP
View
Retailer 13
-
£574 GBP
View
Price last confirmed 14 days ago
B+
Retailer 14
-
£636 GBP
View
B+
Retailer 15
-
£641 GBP
View
B+
Retailer 16
-
£676 GBP
View
B+
Retailer 17
-
£792 GBP
View
B+
Retailer 18
-
£804 GBP
View
Most Expensive
B
Brilliant Earth
22456261A · Nov 3
£850 GBP
$1,140 USD
View
18 more retailers have this diamond
Prices start from £160 GBPSave up to £690 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
£160 GBP