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Marquise|Lab Grown|IGI

1.02ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG854641724

Certificate IGI LG854641724

Diamond specifications and retailer prices

From £109 GBP
As of November 6, 2026
Save £325 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £434 GBP at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.02ct lab-grown marquise diamond

This 1.02ct 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 LG854641724 or 854641724. Listed at 8 retailers as of November 6, 2026, with prices from £109 to £434, a £325 spread on the same certified stone. NZ Jewellers lists it at £434. 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

1.02
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG854641724
Dimensions10.65 × 5.51 × 3.13 mm
L/W Ratio1.93
Top View
10.65 mm5.51 mm1.02 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG854641724
Side View
Table 63.0%CrownGirdle: MediumPavilionCuletDepth 56.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £434 GBP|Low: £109 GBP|High: £434 GBP|Avg: £211 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3£109 GBP
Retailer 2£122 GBP
Retailer 4£126 GBP
Retailer 5£160 GBP
Retailer 6£231 GBP
Retailer 7£249 GBP
Retailer 8£256 GBP
NZ Jewellers£434 GBP

1 data point across 8 retailers

8 retailers£109 GBP to £434 GBP

Cheapest Retailer
-
£109 GBP
Retailer 2
-
£122 GBP
View
Final sale: no returns
A
Retailer 3
-
£126 GBP
View
B+
Retailer 4
-
£160 GBP
View
B+
Retailer 5
-
£231 GBP
View
B+
Retailer 6
-
£249 GBP
View
B+
Retailer 7
-
£256 GBP
View
Most Expensive
NZ Jewellers
56f96cc3-ec35-4d39-8027-156ba7856dca · Nov 6
£434 GBP
$584 USD
View
7 more retailers have this diamond
Prices start from £109 GBPSave up to £325 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
1.02ct Marquise
£109 GBP