Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2556995298

Certificate GIA 2556995298

Diamond specifications and retailer prices

From £447 GBP
As of November 6, 2026
Save £648 GBP (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,875 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 2556995298. Listed at 20 retailers as of November 2, 2026, with a 145% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556995298
Dimensions7.67 × 4.30 × 2.55 mm
L/W Ratio1.78
Key to symbols
Twinning Wisp, Feather
Top View
7.67 mm4.30 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556995298
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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 6
Current: £1,875 GBP|Low: £437 GBP|High: £1,875 GBP|Avg: £753 GBP|+3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 18£447 GBP
Retailer 11£533 GBP
Retailer 6£551 GBP
Retailer 4£594 GBP
Retailer 3£597 GBP
Retailer 13£597 GBP
Retailer 8£606 GBP
Retailer 10£620 GBP
Retailer 15£620 GBP
Retailer 7£672 GBP
Retailer 19£689 GBP
Retailer 9£696 GBP
Retailer 12£712 GBP
Retailer 5£724 GBP
Retailer 2£730 GBP
Retailer 16£841 GBP
Retailer 14£922 GBP
Retailer 17£1,094 GBP
NZ Jewellers£1,875 GBP

28 data points across 19 retailers

20 retailers£447 GBP to £1,094 GBP

A
Cheapest Retailer
-
£447 GBP
Retailer 2
-
£533 GBP
View
Price last confirmed 19 days ago
A
Retailer 3
-
£551 GBP
View
Final sale: no returns
Retailer 4
-
£594 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£597 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£597 GBP
View
B+
Retailer 7
-
£606 GBP
View
Retailer 8
-
£620 GBP
View
Price last confirmed 10 days ago
B+
Retailer 9
-
£620 GBP
View
B+
Retailer 10
-
£672 GBP
View
B+
Retailer 11
-
£689 GBP
View
B+
Retailer 12
-
£696 GBP
View
B+
Retailer 13
-
£712 GBP
View
B+
Retailer 14
-
£724 GBP
View
B+
Retailer 15
-
£730 GBP
View
B+
Retailer 16
-
£841 GBP
View
B
Retailer 17
-
£922 GBP
View
Retailer 18
-
£930 GBP
View
Price last confirmed 32 days ago
B
Retailer 19
-
£1,094 GBP
View
Most Expensive
NZ Jewellers
5a7da615-2684-40e1-8c15-03793f6e4886 · Nov 5
£1,875 GBP
$2,523 USD
View
Price under review
19 more retailers have this diamond
Prices start from £447 GBPSave up to £648 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
£447 GBP