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Marquise|Lab Grown|IGI

1.00ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG757532266

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG757532266

Diamond specifications and retailer prices

From £238 GBP
$319 USD
As of November 1, 2026
Save £439 GBP (65%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £677 GBP at MOH London · As of November 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG757532266 or 757532266. Listed at 6 retailers as of November 1, 2026, with prices from £238 to £677, a £439 spread on the same certified stone. MOH London lists it at £677. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757532266
Dimensions10.21 × 5.29 × 3.17 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.21 mm5.29 mm1.00 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757532266
Side View
Table 63.0%Crown 32.6°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 59.9%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £677 GBP|Low: £238 GBP|High: £684 GBP|Avg: £337 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£238 GBP
Retailer 2£254 GBP
Retailer 4£263 GBP
Retailer 3£275 GBP
Retailer 5£325 GBP
MOH London£677 GBP

40 data points across 6 retailers

6 retailers£238 GBP to £677 GBP

A
Cheapest Retailer
-
£238 GBP
$319 USD
A
Retailer 2
-
£254 GBP
View
B+
Retailer 3
-
£263 GBP
$353 USD
View
B+
Retailer 4
-
£275 GBP
View
B+
Retailer 5
-
£325 GBP
$436 USD
View
Most Expensive
B
MOH London
LG757532266 · Nov 1
£677 GBP
View
5 more retailers have this diamond
Prices start from £238 GBPSave up to £439 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
£238 GBP