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Marquise|Lab Grown|IGI

1.00ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG500144857

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500144857

Diamond specifications and retailer prices

From £628 GBP
$843 USD
As of November 2, 2026
Save £711 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,010 GBP at Flawless Fine Jewelry · As of November 2, 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 LG500144857 or 500144857. Listed at 16 retailers as of November 2, 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 angle34.3°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500144857
Dimensions10.53 × 5.23 × 3.03 mm
L/W Ratio2.01
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
10.53 mm5.23 mm1.00 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500144857
Side View
Table 62.5%Crown 34.3°Girdle: STK-THKPavilion 34.8°Culet: NoneDepth 57.9%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £2,010 GBP|Low: £603 GBP|High: £2,764 GBP|Avg: £1,285 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 2, 2026
Retailer 11£628 GBP
Retailer 4£683 GBP
Retailer 5£703 GBP
Retailer 12£715 GBP
Retailer 13£729 GBP
Retailer 6£861 GBP
Retailer 7£1,120 GBP
Retailer 14£1,172 GBP
Retailer 2£1,339 GBP
Retailer 10£1,675 GBP
Retailer 9£1,899 GBP
Flawless Fine Jewelry£2,010 GBP
Retailer 3£2,049 GBP
Retailer 8£2,731 GBP

44 data points across 14 retailers

16 retailers£628 GBP to £1,339 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
-
£1,120 GBP
View
B
Retailer 9
-
£1,172 GBP
$1,573 USD
View
B
Retailer 10
-
£1,339 GBP
ZAR 29,029 ZAR
View
Retailer 11
-
£1,675 GBP
$2,248 USD
View
Price under review
Retailer 12
-
£1,899 GBP
A$3,920 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
B2C327413 · Nov 2
£2,010 GBP
View
Price under review
12 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