Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2546813962

Certificate GIA 2546813962

Diamond specifications and retailer prices

From £408 GBP
As of November 6, 2026
Save £448 GBP (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,739 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546813962. Listed at 18 retailers as of November 5, 2026, with a 110% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546813962
Dimensions7.82 × 4.19 × 2.65 mm
L/W Ratio1.87
Top View
7.82 mm4.19 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546813962
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.3%

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: £1,739 GBP|Low: £359 GBP|High: £1,768 GBP|Avg: £781 GBP|-1.6%
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
Retailer 20
Retailer 21
November 6, 2026
Retailer 2£408 GBP
Retailer 10£421 GBP
Retailer 5£512 GBP
Retailer 19£554 GBP
Retailer 3£563 GBP
Retailer 9£564 GBP
Retailer 4£576 GBP
Retailer 12£628 GBP
Retailer 6£640 GBP
Retailer 7£640 GBP
Retailer 15£653 GBP
Retailer 18£659 GBP
Retailer 13£677 GBP
Retailer 20£687 GBP
Retailer 16£758 GBP
Retailer 17£781 GBP
Retailer 8£847 GBP
Retailer 21£856 GBP
Retailer 11£1,044 GBP
Retailer 14£1,414 GBP
NZ Jewellers£1,739 GBP

21 data points across 21 retailers

18 retailers£408 GBP to £856 GBP

A
Cheapest Retailer
-
£408 GBP
Retailer 2
-
£421 GBP
View
Price last confirmed 29 days ago
B+
Retailer 3
-
£512 GBP
View
Final sale: no returns
Retailer 4
-
£542 GBP
View
Price last confirmed 179 days ago
B+
Retailer 5
-
£554 GBP
View
B+
Retailer 6
-
£563 GBP
View
B+
Retailer 7
-
£576 GBP
View
B
Retailer 8
-
£640 GBP
View
B
Retailer 9
-
£640 GBP
View
B
Retailer 10
-
£653 GBP
View
B
Retailer 11
-
£659 GBP
View
B+
Retailer 12
-
£677 GBP
View
B+
Retailer 13
-
£687 GBP
View
B
Retailer 14
-
£758 GBP
View
B
Retailer 15
-
£781 GBP
View
Retailer 16
-
£847 GBP
View
Price last confirmed 32 days ago
B
Retailer 17
-
£856 GBP
View
Most Expensive
NZ Jewellers
f022d7fe-5e22-41fe-9eeb-3a1e114963ce · Nov 5
£1,739 GBP
$2,328 USD
View
Price under review
17 more retailers have this diamond
Prices start from £408 GBPSave up to £448 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
£408 GBP