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Marquise|Lab Grown|IGI

1.00ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG512204096

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512204096

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)
15 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 very-good cut grade and certified by IGI LG512204096 or 512204096. Listed at 15 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512204096
Dimensions10.29 × 5.28 × 3.01 mm
L/W Ratio1.95
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
10.29 mm5.28 mm1.00 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512204096
Side View
Table 64.0%Crown 37.4°Girdle: THK-VTKPavilion 37°Culet: NoneDepth 57.0%

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: £2,764 GBP|Avg: £1,239 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
November 1, 2026
Retailer 9£628 GBP
Retailer 3£683 GBP
Retailer 4£703 GBP
Retailer 10£715 GBP
Retailer 11£729 GBP
Retailer 5£861 GBP
Retailer 2£1,111 GBP
Retailer 12£1,172 GBP
Retailer 7£1,340 GBP
Retailer 8£1,675 GBP
Flawless Fine Jewelry£2,010 GBP
Retailer 13£2,049 GBP
Retailer 6£2,746 GBP

44 data points across 13 retailers

15 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
-
£1,111 GBP
View
B
Retailer 9
-
£1,172 GBP
$1,573 USD
View
B
Retailer 10
-
£1,340 GBP
ZAR 29,041 ZAR
View
Retailer 11
-
£1,675 GBP
$2,248 USD
View
Price under review
Most Expensive
Flawless Fine Jewelry
8CB2C688B · Oct 31
£2,010 GBP
View
Price under review
11 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