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Marquise|Lab Grown|IGI

1.43ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG577381029

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG577381029

Diamond specifications and retailer prices

From £131 GBP
$176 USD
As of October 27, 2026
Save £1,130 GBP (90%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,261 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.43ct lab-grown marquise diamond

This 1.43ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG577381029 or 577381029. Listed at 8 retailers as of October 27, 2026, with prices from £131 to £1,261, a £1,130 spread on the same certified stone. Do Amore Diamonds lists it at £1,261. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.43
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577381029
Dimensions11.47 × 5.99 × 3.78 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.47 mm5.99 mm1.43 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577381029
Side View
Table 58.0%Crown 34.4°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 63.1%

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: Oct 27
Current: £1,261 GBP|Low: £131 GBP|High: £1,418 GBP|Avg: £632 GBP|-11.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5£131 GBP
Retailer 7£290 GBP
Retailer 3£439 GBP
Retailer 4£553 GBP
Retailer 8£580 GBP
Retailer 6£687 GBP
Retailer 2£845 GBP
Do Amore Diamonds£1,261 GBP

8 data points across 8 retailers

8 retailers£131 GBP to £1,261 GBP

A
Cheapest Retailer
-
£131 GBP
$176 USD
B+
Retailer 2
-
£290 GBP
$388 USD
View
A
Retailer 3
-
£439 GBP
A$904 AUD
View
A
Retailer 4
-
£553 GBP
$741 USD
View
B+
Retailer 5
-
£580 GBP
$777 USD
View
B+
Retailer 6
-
£687 GBP
$920 USD
View
B+
Retailer 7
-
£845 GBP
View
Most Expensive
B
Do Amore Diamonds
27-796C378AC · Oct 29
£1,261 GBP
$1,690 USD
View
7 more retailers have this diamond
Prices start from £131 GBPSave up to £1,130 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
1.43ct Marquise
£131 GBP