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Marquise|Lab Grown|IGI

1.00ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG502157877

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG502157877

Diamond specifications and retailer prices

From £628 GBP
$843 USD
As of October 30, 2026
Save £711 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,010 GBP at Flawless Fine Jewelry · As of October 31, 2026
View at Flawless Fine Jewelry

About this 1ct lab-grown marquise diamond

This 1ct 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 LG502157877 or 502157877. Listed at 17 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

1.00
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502157877
Dimensions10.40 × 5.27 × 3.01 mm
L/W Ratio1.97
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
10.40 mm5.27 mm1.00 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502157877
Side View
Table 60.5%Crown 35.6°Girdle: MED-THKPavilion 36°Culet: NoneDepth 57.1%

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: £2,010 GBP|Low: £603 GBP|High: £2,768 GBP|Avg: £1,249 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
Retailer 15
Retailer 16
October 31, 2026
Retailer 14£628 GBP
Retailer 5£683 GBP
Retailer 7£703 GBP
Retailer 15£715 GBP
Retailer 6£729 GBP
Retailer 16£729 GBP
Retailer 8£861 GBP
Retailer 10£957 GBP
Retailer 9£1,120 GBP
Retailer 3£1,172 GBP
Retailer 12£1,340 GBP
Retailer 13£1,675 GBP
Retailer 2£1,899 GBP
Flawless Fine Jewelry£2,010 GBP
Retailer 4£2,049 GBP
Retailer 11£2,746 GBP

43 data points across 16 retailers

17 retailers£628 GBP to £1,340 GBP

B
Cheapest Retailer
-
£628 GBP
$843 USD
B
Retailer 2
-
£683 GBP
$917 USD
View
B
Retailer 3
-
£703 GBP
$944 USD
View
Final sale: no returns
B
Retailer 4
-
£715 GBP
$960 USD
View
Retailer 5
-
£729 GBP
$978 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
£729 GBP
$978 USD
View
B
Retailer 7
-
£861 GBP
$1,155 USD
View
B
Retailer 8
-
£957 GBP
View
B
Retailer 9
-
£1,120 GBP
View
B
Retailer 10
-
£1,172 GBP
$1,573 USD
View
B
Retailer 11
-
£1,340 GBP
ZAR 29,041 ZAR
View
Retailer 12
-
£1,675 GBP
$2,248 USD
View
Price under review
Retailer 13
-
£1,899 GBP
A$3,920 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
A05ED26ED · Oct 31
£2,010 GBP
View
Price under review
13 more retailers have this diamond
Prices start from £628 GBPSave up to £711 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
1.00ct Marquise
£628 GBP