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Marquise|Lab Grown|IGI

1.05ct D SI1 Marquise Lab Grown Diamond

VG • D/SI1 • IGI LG844636747

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844636747

Diamond specifications and retailer prices

From £161 GBP
As of November 1, 2026
Save £359 GBP (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £520 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG844636747 or 844636747. Listed at 10 retailers as of November 1, 2026, with prices from £161 to £520, a £359 spread on the same certified stone. Brilliant Earth lists it at £520. 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

1.05
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844636747
Dimensions10.32 × 5.41 × 3.28 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
10.32 mm5.41 mm1.05 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG844636747
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.6%

Caratlytics Score

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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: £520 GBP|Low: £126 GBP|High: £780 GBP|Avg: £303 GBP|-33.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 3£126 GBP
Retailer 11£161 GBP
Retailer 6£167 GBP
Retailer 9£238 GBP
Retailer 7£241 GBP
Retailer 10£256 GBP
Retailer 12£262 GBP
Retailer 8£299 GBP
Retailer 2£364 GBP
Retailer 4£385 GBP
Retailer 5£416 GBP
Brilliant Earth£520 GBP

10 data points across 12 retailers

10 retailers£161 GBP to £520 GBP

A
Cheapest Retailer
-
£161 GBP
Retailer 2
-
£238 GBP
View
Price last confirmed 12 days ago
Retailer 3
-
£241 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£256 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£262 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£299 GBP
View
Price last confirmed 11 days ago
B
Retailer 7
-
£364 GBP
View
B
Retailer 8
-
£385 GBP
View
Retailer 9
-
£416 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
22235177A · Nov 3
£520 GBP
$700 USD
View
9 more retailers have this diamond
Prices start from £161 GBPSave up to £359 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
1.05ct Marquise
£161 GBP