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Marquise|Lab Grown|IGI

1.03ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG508138564

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG508138564

Diamond specifications and retailer prices

From £648 GBP
$868 USD
As of October 30, 2026
Save £733 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,070 GBP at Flawless Fine Jewelry · As of October 31, 2026
View at Flawless Fine Jewelry

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508138564 or 508138564. Listed at 16 retailers as of October 29, 2026, with a 113% 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

1.03
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508138564
Dimensions10.71 × 5.24 × 3.08 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizePointed
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
10.71 mm5.24 mm1.03 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508138564
Side View
Table 62.5%Crown 35.9°Girdle: THN-STKPavilion 38.3°Culet: NoneDepth 58.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,070 GBP|Low: £622 GBP|High: £2,853 GBP|Avg: £1,320 GBP
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 11£648 GBP
Retailer 4£705 GBP
Retailer 5£725 GBP
Retailer 12£739 GBP
Retailer 13£751 GBP
Retailer 6£881 GBP
Retailer 2£1,155 GBP
Retailer 14£1,207 GBP
Retailer 9£1,381 GBP
Retailer 10£1,726 GBP
Retailer 7£1,957 GBP
Flawless Fine Jewelry£2,070 GBP
Retailer 3£2,111 GBP
Retailer 8£2,830 GBP

45 data points across 14 retailers

16 retailers£648 GBP to £1,381 GBP

B
Cheapest Retailer
-
£648 GBP
$868 USD
B
Retailer 2
-
£705 GBP
$944 USD
View
B
Retailer 3
-
£725 GBP
$972 USD
View
Final sale: no returns
B
Retailer 4
-
£739 GBP
$990 USD
View
Retailer 5
-
£751 GBP
$1,006 USD
View
Price last confirmed 15 days ago
B
Retailer 6
-
£751 GBP
$1,006 USD
View
B
Retailer 7
-
£881 GBP
$1,180 USD
View
B
Retailer 8
-
£1,155 GBP
View
B
Retailer 9
-
£1,207 GBP
$1,617 USD
View
B
Retailer 10
-
£1,381 GBP
ZAR 29,883 ZAR
View
Retailer 11
-
£1,726 GBP
$2,313 USD
View
Price under review
Retailer 12
-
£1,957 GBP
A$4,034 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
23B5F36DB · Oct 31
£2,070 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £648 GBPSave up to £733 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
1.03ct Marquise
£648 GBP