Marquise|Lab Grown|IGI

1.55ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG835651464

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG835651464

Diamond specifications and retailer prices

From £258 GBP
As of November 4, 2026
Save £232 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,207 GBP at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise 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 LG835651464 or 835651464. Listed at 13 retailers as of November 2, 2026, with a 90% 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
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishGood
SymmetryVery Good
FluorescenceNone
Crown angle33.7°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835651464
Dimensions12.00 × 6.00 × 3.57 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.00 mm6.00 mm1.55 ctH / VS1
OriginLab Grown
CutIdeal
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateIGI LG835651464
Side View
Table 65.0%Crown 33.7°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,207 GBP|Low: £172 GBP|High: £1,267 GBP|Avg: £513 GBP|-4.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9£172 GBP
Retailer 4£256 GBP
Retailer 10£258 GBP
Retailer 7£323 GBP
Retailer 5£359 GBP
Retailer 3£390 GBP
Retailer 2£490 GBP
Retailer 6£767 GBP
Retailer 8£903 GBP
Brilliant Earth£1,207 GBP

24 data points across 10 retailers

13 retailers£258 GBP to £490 GBP

Retailer 1
-
£159 GBP
Price last confirmed 28 days ago
Retailer 2
-
£185 GBP
View
Price last confirmed 21 days ago
Retailer 3
-
£198 GBP
View
Price last confirmed 33 days ago
Retailer 4
-
£256 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£258 GBP
View
Retailer 6
-
£323 GBP
View
Price last confirmed 13 days ago
Retailer 7
-
£359 GBP
View
Price last confirmed 9 days ago
A
Retailer 8
-
£390 GBP
View
A
Retailer 9
-
£490 GBP
View
Retailer 10
-
£636 GBP
View
Price last confirmed 36 days ago
Retailer 11
-
£767 GBP
View
Price last confirmed 11 days ago
Retailer 12
-
£903 GBP
View
Price last confirmed 11 days ago
Most Expensive
Brilliant Earth
21566015A · Oct 24
£1,207 GBP
$1,630 USD
View
Price last confirmed 11 days ago
12 more retailers have this diamond
Prices start from £258 GBPSave up to £232 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 Marquise
£258 GBP