Marquise|Lab Grown|IGI

1.03ct E VS1 Marquise Lab Grown Diamond

VG • E/VS1 • IGI LG831695594

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831695594

Diamond specifications and retailer prices

From £134 GBP
$180 USD
As of October 30, 2026
Save £965 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,099 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831695594 or 831695594. Listed at 19 retailers as of October 27, 2026, with prices from £134 to £1,099, a £965 spread on the same certified stone. Queensmith lists it at £1,099. 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

1.03
Carat
E
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831695594
Dimensions10.15 × 5.35 × 3.29 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.15 mm5.35 mm1.03 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831695594
Side View
Table 61.0%Crown 35.7°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 61.5%

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: Oct 30
Current: £1,099 GBP|Low: £134 GBP|High: £1,099 GBP|Avg: £396 GBP
Queensmith
Retailer 2
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October 30, 2026
Retailer 9£134 GBP
Retailer 7£151 GBP
Retailer 5£156 GBP
Retailer 3£167 GBP
Retailer 18£167 GBP
Retailer 12£210 GBP
Retailer 10£225 GBP
Retailer 6£249 GBP
Retailer 15£287 GBP
Retailer 2£301 GBP
Retailer 8£346 GBP
Retailer 16£407 GBP
Retailer 14£470 GBP
Retailer 19£537 GBP
Retailer 17£567 GBP
Retailer 11£577 GBP
Retailer 13£785 GBP
Retailer 4£844 GBP
Queensmith£1,099 GBP

9 data points across 19 retailers

19 retailers£134 GBP to £1,099 GBP

A
Cheapest Retailer
-
£134 GBP
$180 USD
A
Retailer 2
-
£151 GBP
$202 USD
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
$209 USD
View
A
Retailer 4
-
£167 GBP
$224 USD
View
A
Retailer 5
-
£167 GBP
$224 USD
View
A
Retailer 6
-
£210 GBP
View
B+
Retailer 7
-
£225 GBP
$302 USD
View
A
Retailer 8
-
£249 GBP
$334 USD
View
A
Retailer 9
-
£287 GBP
ZAR 6,206 ZAR
View
A
Retailer 10
-
£301 GBP
View
B+
Retailer 11
-
£346 GBP
$464 USD
View
B+
Retailer 12
-
£407 GBP
A$840 AUD
View
B+
Retailer 13
-
£470 GBP
A$968 AUD
View
B
Retailer 14
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£537 GBP
$719 USD
View
B
Retailer 15
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£567 GBP
$760 USD
View
B
Retailer 16
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£577 GBP
$773 USD
View
B
Retailer 17
-
£785 GBP
View
B
Retailer 18
-
£844 GBP
$1,131 USD
View
Most Expensive
B
Queensmith
LG831695594 · Oct 27
£1,099 GBP
View
18 more retailers have this diamond
Prices start from £134 GBPSave up to £965 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
1.03ct Marquise
£134 GBP