Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 3545398580

Certificate GIA 3545398580

Diamond specifications and retailer prices

From £556 GBP
As of November 4, 2026
Save £753 GBP (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,242 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545398580. Listed at 23 retailers as of November 2, 2026, with a 136% 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3545398580
Dimensions8.10 × 4.15 × 2.57 mm
L/W Ratio1.95
Top View
8.10 mm4.15 mm0.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3545398580
Side View
Table 58.0%CrownGirdle: VTN-THKPavilion 40.6°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,242 GBP|Low: £556 GBP|High: £2,242 GBP|Avg: £1,007 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£556 GBP
Retailer 5£623 GBP
Retailer 3£648 GBP
Retailer 11£672 GBP
Retailer 8£769 GBP
Retailer 4£828 GBP
Retailer 2£1,001 GBP
Retailer 10£1,075 GBP
Retailer 6£1,103 GBP
Retailer 7£1,309 GBP
NZ Jewellers£2,242 GBP

45 data points across 11 retailers

23 retailers£556 GBP to £1,309 GBP

A
Cheapest Retailer
-
£556 GBP
Final sale: no returns
A
Retailer 2
-
£598 GBP
View
A
Retailer 3
-
£623 GBP
View
B+
Retailer 4
-
£636 GBP
View
B+
Retailer 5
-
£643 GBP
View
B+
Retailer 6
-
£648 GBP
View
Retailer 7
-
£648 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£649 GBP
View
B+
Retailer 9
-
£655 GBP
View
B+
Retailer 10
-
£672 GBP
View
B+
Retailer 11
-
£723 GBP
View
B+
Retailer 12
-
£747 GBP
View
B
Retailer 13
-
£769 GBP
View
B+
Retailer 14
-
£803 GBP
View
B+
Retailer 15
-
£828 GBP
View
B
Retailer 16
-
£881 GBP
View
B
Retailer 17
-
£952 GBP
View
B
Retailer 18
-
£1,001 GBP
View
Retailer 19
-
£1,075 GBP
View
Price last confirmed 33 days ago
B
Retailer 20
-
£1,103 GBP
View
B
Retailer 21
-
£1,156 GBP
View
B
Retailer 22
-
£1,309 GBP
View
Most Expensive
NZ Jewellers
ecb8af5a-ce34-49cf-9bbe-67104c100532 · Nov 5
£2,242 GBP
$3,018 USD
View
Price under review
22 more retailers have this diamond
Prices start from £556 GBPSave up to £753 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
0.50ct Marquise
£556 GBP