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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2557165660

Certificate GIA 2557165660

Diamond specifications and retailer prices

From £435 GBP
As of November 5, 2026
Save £1,356 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,791 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 2557165660. Listed at 13 retailers as of November 5, 2026, with prices from £435 to £1,791, a £1,356 spread on the same certified stone. NZ Jewellers lists it at £1,791. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557165660
Dimensions8.53 × 4.10 × 2.47 mm
L/W Ratio2.08
Top View
8.53 mm4.10 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557165660
Side View
Table 58.0%CrownGirdle: UND-UNDPavilionCulet: NoneDepth 60.1%

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 5
Current: £681 GBP|Low: £435 GBP|High: £1,057 GBP|Avg: £657 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2£435 GBP
Retailer 7£527 GBP
Retailer 6£583 GBP
Retailer 3£585 GBP
Retailer 8£593 GBP
Retailer 1£681 GBP
Retailer 4£805 GBP
Retailer 5£1,045 GBP

38 data points across 8 retailers

13 retailers£435 GBP to £1,791 GBP

A
Cheapest Retailer
-
£435 GBP
A
Retailer 2
-
£527 GBP
View
Final sale: no returns
A
Retailer 3
-
£571 GBP
View
A
Retailer 4
-
£583 GBP
View
A
Retailer 5
-
£585 GBP
View
A
Retailer 6
-
£591 GBP
View
A
Retailer 7
-
£593 GBP
View
B+
Retailer 8
-
£647 GBP
View
B+
Retailer 9
-
£659 GBP
View
B+
Retailer 10
-
£681 GBP
View
B+
Retailer 11
-
£805 GBP
View
B
Retailer 12
-
£1,045 GBP
View
Most Expensive
B
NZ Jewellers
0d6eefda-45c2-4910-8efa-370fbd0c370c · Nov 5
£1,791 GBP
$2,410 USD
View
12 more retailers have this diamond
Prices start from £435 GBPSave up to £1,356 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
£435 GBP