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Marquise|Lab Grown|IGI

1.01ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG843683956

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843683956

Diamond specifications and retailer prices

From £185 GBP
$248 USD
As of November 1, 2026
Save £451 GBP (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £636 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.01ct lab-grown marquise diamond

This 1.01ct 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 LG843683956 or 843683956. Listed at 6 retailers as of November 1, 2026, with prices from £185 to £636, a £451 spread on the same certified stone. MOH London lists it at £636. 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843683956
Dimensions10.16 × 5.33 × 3.22 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.16 mm5.33 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843683956
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 60.4%

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 1
Current: £636 GBP|Low: £185 GBP|High: £640 GBP|Avg: £333 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£185 GBP
Retailer 2£235 GBP
Retailer 4£240 GBP
Retailer 3£258 GBP
Retailer 5£479 GBP
MOH London£636 GBP

16 data points across 6 retailers

6 retailers£185 GBP to £636 GBP

B+
Cheapest Retailer
-
£185 GBP
$248 USD
A
Retailer 2
-
£235 GBP
View
A
Retailer 3
-
£240 GBP
$321 USD
View
A
Retailer 4
-
£258 GBP
View
B
Retailer 5
-
£479 GBP
$641 USD
View
Most Expensive
B
MOH London
LG843683956 · Nov 1
£636 GBP
View
5 more retailers have this diamond
Prices start from £185 GBPSave up to £451 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
1.01ct Marquise
£185 GBP