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Marquise|Lab Grown|IGI

1.00ct I VS1 Marquise Lab Grown Diamond

ID • I/VS1 • IGI LG436046305

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436046305

Diamond specifications and retailer prices

From £432 GBP
$580 USD
As of November 2, 2026
Save £2,933 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,365 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG436046305 or 436046305. Listed at 13 retailers as of October 29, 2026, with prices from £432 to £3,365, a £2,933 spread on the same certified stone. MOH London lists it at £3,365. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046305
Dimensions9.65 × 5.32 × 3.29 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.65 mm5.32 mm1.00 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436046305
Side View
Table 59.5%Crown 32.3°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £3,365 GBP|Low: £432 GBP|High: £3,388 GBP|Avg: £1,593 GBP|+0.5%
MOH London
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 30, 2026
Retailer 2£432 GBP
Retailer 7£670 GBP
Retailer 10£898 GBP
Retailer 14£977 GBP
Retailer 16£1,006 GBP
Retailer 11£1,042 GBP
Retailer 15£1,042 GBP
Retailer 5£1,170 GBP
Retailer 6£1,458 GBP
Retailer 12£1,652 GBP
Retailer 9£1,915 GBP
Retailer 13£1,953 GBP
Retailer 4£1,996 GBP
Retailer 3£2,521 GBP
Retailer 8£2,983 GBP
MOH London£3,365 GBP

22 data points across 16 retailers

13 retailers£432 GBP to £3,365 GBP

A
Cheapest Retailer
-
£432 GBP
$580 USD
B
Retailer 2
-
£898 GBP
$1,205 USD
View
B
Retailer 3
-
£977 GBP
$1,311 USD
View
B
Retailer 4
-
£1,006 GBP
$1,350 USD
View
Final sale: no returns
B
Retailer 5
-
£1,042 GBP
$1,398 USD
View
Retailer 6
-
£1,042 GBP
$1,398 USD
View
Price last confirmed 21 days ago
B
Retailer 7
-
£1,170 GBP
$1,570 USD
View
B
Retailer 8
-
£1,652 GBP
$2,217 USD
View
B
Retailer 9
-
£1,915 GBP
ZAR 41,520 ZAR
View
B
Retailer 10
-
£1,953 GBP
$2,621 USD
View
B
Retailer 11
-
£1,996 GBP
$2,678 USD
View
B
Retailer 12
-
£2,521 GBP
View
Most Expensive
B
MOH London
LG436046305 · Oct 29
£3,365 GBP
View
12 more retailers have this diamond
Prices start from £432 GBPSave up to £2,933 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.

A
1.00ct Marquise
£432 GBP