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Marquise|Lab Grown|IGI

0.51ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG827605414

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG827605414

Diamond specifications and retailer prices

From £220 GBP
$295 USD
As of October 30, 2026
Save £1,039 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,702 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG827605414 or 827605414. Listed at 14 retailers as of October 29, 2026, with a 472% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG827605414
Dimensions8.30 × 4.15 × 2.54 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.30 mm4.15 mm0.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG827605414
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
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: £1,702 GBP|Low: £170 GBP|High: £1,702 GBP|Avg: £688 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
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Retailer 12
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Retailer 18
October 31, 2026
Retailer 4£220 GBP
Retailer 13£256 GBP
Retailer 8£414 GBP
Retailer 18£419 GBP
Retailer 14£465 GBP
Retailer 7£537 GBP
Retailer 12£560 GBP
Retailer 9£561 GBP
Retailer 17£565 GBP
Retailer 2£612 GBP
Retailer 6£878 GBP
Retailer 10£922 GBP
Retailer 11£925 GBP
Retailer 16£1,093 GBP
Retailer 5£1,123 GBP
Retailer 3£1,139 GBP
Retailer 15£1,259 GBP
Do Amore Diamonds£1,702 GBP

19 data points across 18 retailers

14 retailers£220 GBP to £1,259 GBP

A
Cheapest Retailer
-
£220 GBP
$295 USD
A
Retailer 2
-
£256 GBP
$343 USD
View
Final sale: no returns
B+
Retailer 3
-
£419 GBP
$561 USD
View
B+
Retailer 4
-
£419 GBP
$562 USD
View
B+
Retailer 5
-
£560 GBP
View
B
Retailer 6
-
£565 GBP
ZAR 12,231 ZAR
View
B
Retailer 7
-
£612 GBP
$820 USD
View
B
Retailer 8
-
£878 GBP
$1,176 USD
View
B
Retailer 9
-
£925 GBP
CA$1,722 CAD
View
B
Retailer 10
-
£1,093 GBP
$1,464 USD
View
B
Retailer 11
-
£1,123 GBP
$1,505 USD
View
B
Retailer 12
-
£1,139 GBP
$1,527 USD
View
B
Retailer 13
-
£1,259 GBP
View
Most Expensive
Do Amore Diamonds
20-C149315 · Oct 29
£1,702 GBP
$2,280 USD
View
Price under review
13 more retailers have this diamond
Prices start from £220 GBPSave up to £1,039 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
0.51ct Marquise
£220 GBP