Marquise|Natural|GIA

0.50ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 5543621869

Certificate GIA 5543621869

Diamond specifications and retailer prices

From £629 GBP
$843 USD
As of October 30, 2026
Save £490 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,173 GBP at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543621869. Listed at 16 retailers as of October 30, 2026, with a 78% 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

0.50
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 5543621869
Dimensions7.91 × 4.13 × 2.55 mm
L/W Ratio1.92
Top View
7.91 mm4.13 mm0.50 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5543621869
Side View
Table 59.0%CrownGirdle: THK-VTKPavilion 40.2°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,173 GBP|Low: £628 GBP|High: £2,173 GBP|Avg: £1,001 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 5£628 GBP
Retailer 6£724 GBP
Retailer 8£769 GBP
Retailer 9£769 GBP
Retailer 3£775 GBP
Retailer 2£898 GBP
Retailer 7£1,043 GBP
Retailer 4£1,276 GBP
NZ Jewellers£2,173 GBP

38 data points across 9 retailers

16 retailers£629 GBP to £1,119 GBP

Retailer 1
-
£616 GBP
$826 USD
Price last confirmed 8 days ago
Retailer 2
-
£628 GBP
$841 USD
View
Price last confirmed 15 days ago
Retailer 3
-
£628 GBP
$841 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£629 GBP
$843 USD
View
Retailer 5
-
£636 GBP
$852 USD
View
Price last confirmed 7 days ago
Retailer 6
-
£652 GBP
$873 USD
View
Price last confirmed 14 days ago
Retailer 7
-
£724 GBP
$970 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
£769 GBP
$1,030 USD
View
B
Retailer 9
-
£769 GBP
$1,030 USD
View
Retailer 10
-
£775 GBP
View
Price last confirmed 9 days ago
B
Retailer 11
-
£777 GBP
$1,041 USD
View
B
Retailer 12
-
£799 GBP
$1,070 USD
View
B
Retailer 13
-
£898 GBP
€1,146 EUR
View
B
Retailer 14
-
£1,119 GBP
CA$2,083 CAD
View
Retailer 15
-
£1,276 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
6cd1a02b-cdf6-4e05-a5db-712d00adc034 · Oct 21
£2,173 GBP
$2,911 USD
View
Price under review
15 more retailers have this diamond
Prices start from £629 GBPSave up to £490 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.

B+
0.50ct Marquise
£629 GBP