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Marquise|Lab Grown|IGI

1.55ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG784611845

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784611845

Diamond specifications and retailer prices

From £713 GBP
CA$1,329 CAD
As of October 30, 2026
Save £230 GBP (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £943 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG784611845 or 784611845. Listed at 3 retailers as of October 30, 2026, with prices from £713 to £943, a £230 spread on the same certified stone. The Diamond Guys lists it at £943. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784611845
Dimensions12.27 × 5.95 × 3.75 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.27 mm5.95 mm1.55 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784611845
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

Caratlytics Score

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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: Oct 30
Current: £437 GBP|Low: £144 GBP|High: £1,759 GBP|Avg: £761 GBP|-10.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
The Diamond Guys
September 6, 2026
Retailer 14£274 GBP
Retailer 6£329 GBP
Retailer 3£364 GBP
Retailer 8£394 GBP
Retailer 9£396 GBP
Retailer 1£437 GBP
Retailer 5£642 GBP
Retailer 7£688 GBP
Retailer 4£713 GBP
Retailer 11£895 GBP
Retailer 13£925 GBP
The Diamond Guys£943 GBP
Retailer 12£1,008 GBP
Retailer 2£1,408 GBP
Retailer 10£1,677 GBP

55 data points across 15 retailers

3 retailers£713 GBP to £943 GBP

Retailer 1
-
£688 GBP
$923 USD
Price last confirmed 67 days ago
B+
Retailer 2
-
£713 GBP
CA$1,329 CAD
View
Most Expensive
B
The Diamond Guys
1952043953 · Nov 1
£943 GBP
$1,265 USD
View
2 more retailers have this diamond
Prices start from £713 GBPSave up to £230 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+
1.55ct Marquise
£713 GBP