Marquise|Lab Grown|IGI

1.01ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG830660463

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830660463

Diamond specifications and retailer prices

From £127 GBP
As of November 6, 2026
Save £532 GBP (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £758 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 LG830660463 or 830660463. Listed at 18 retailers as of November 2, 2026, with a 419% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceNone
Crown angle29.9°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830660463
Dimensions10.12 × 5.22 × 3.31 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.12 mm5.22 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG830660463
Side View
Table 52.0%Crown 29.9°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £758 GBP|Low: £127 GBP|High: £758 GBP|Avg: £375 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£127 GBP
Retailer 2£167 GBP
Retailer 6£192 GBP
Retailer 10£239 GBP
Retailer 4£243 GBP
Retailer 8£255 GBP
Retailer 7£267 GBP
Retailer 9£479 GBP
Retailer 3£494 GBP
Retailer 5£659 GBP
Brilliant Earth£758 GBP

40 data points across 11 retailers

18 retailers£127 GBP to £659 GBP

Retailer 1
-
£116 GBP
Price last confirmed 29 days ago
A
Retailer 2
-
£127 GBP
View
Final sale: no returns
Retailer 3
-
£134 GBP
View
Price last confirmed 38 days ago
Retailer 4
-
£144 GBP
View
Price last confirmed 25 days ago
Retailer 5
-
£144 GBP
View
Price last confirmed 34 days ago
A
Retailer 6
-
£167 GBP
View
B+
Retailer 7
-
£192 GBP
View
A
Retailer 8
-
£239 GBP
View
A
Retailer 9
-
£243 GBP
View
Retailer 10
-
£246 GBP
View
Price last confirmed 24 days ago
Retailer 11
-
£255 GBP
View
Price last confirmed 10 days ago
B+
Retailer 12
-
£267 GBP
View
Retailer 13
-
£389 GBP
View
Price last confirmed 61 days ago
Retailer 14
-
£462 GBP
View
Price last confirmed 37 days ago
B
Retailer 15
-
£479 GBP
View
B
Retailer 16
-
£494 GBP
View
B
Retailer 17
-
£659 GBP
View
Most Expensive
Brilliant Earth
21109744A · Oct 28
£758 GBP
$1,020 USD
View
Price last confirmed 8 days ago
17 more retailers have this diamond
Prices start from £127 GBPSave up to £532 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
£127 GBP