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Marquise|Lab Grown|IGI

5.05ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG853686817

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG853686817

Diamond specifications and retailer prices

From £745 GBP
$998 USD
As of November 1, 2026
Save £1,050 GBP (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,795 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.05ct lab-grown marquise diamond

This 5.05ct lab-grown marquise sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG853686817 or 853686817. Listed at 3 retailers as of October 31, 2026, with prices from £745 to £1,795, a £1,050 spread on the same certified stone. Taylor and Hart lists it at £1,795. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.05
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG853686817
Dimensions18.96 × 8.74 × 5.47 mm
L/W Ratio2.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.96 mm8.74 mm5.05 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG853686817
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,205 GBP|Low: £745 GBP|High: £1,795 GBP|Avg: £1,347 GBP
Retailer 1
Retailer 2
Taylor and Hart
November 2, 2026
Retailer 2£745 GBP
Retailer 1£1,205 GBP
Taylor and Hart£1,795 GBP

3 data points across 3 retailers

3 retailers£745 GBP to £1,795 GBP

B+
Cheapest Retailer
-
£745 GBP
$998 USD
B+
Retailer 2
-
£1,205 GBP
$1,614 USD
View
Most Expensive
B
Taylor and Hart
BNFCC3B · Oct 31
£1,795 GBP
$2,405 USD
View
2 more retailers have this diamond
Prices start from £745 GBPSave up to £1,050 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.

B+
5.05ct Marquise
£745 GBP