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Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6562716800

Certificate GIA 6562716800

Diamond specifications and retailer prices

From £367 GBP
As of November 6, 2026
Save £752 GBP (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,521 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 6562716800. Listed at 13 retailers as of November 4, 2026, with a 205% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562716800
Dimensions8.19 × 4.09 × 2.57 mm
L/W Ratio2.00
Girdle conditionSlightly Thick to Very Thick
Key to symbols
Cloud
Top View
8.19 mm4.09 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6562716800
Side View
Table 58.0%CrownGirdle: UND-UNDPavilionCulet: NoneDepth 62.9%

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: £1,521 GBP|Low: £367 GBP|High: £1,521 GBP|Avg: £664 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2£367 GBP
Retailer 4£465 GBP
Retailer 12£485 GBP
Retailer 11£522 GBP
Retailer 9£560 GBP
Retailer 3£573 GBP
Retailer 5£592 GBP
Retailer 6£597 GBP
Retailer 10£607 GBP
Retailer 8£711 GBP
Retailer 7£1,118 GBP
NZ Jewellers£1,521 GBP

14 data points across 12 retailers

13 retailers£367 GBP to £1,118 GBP

A
Cheapest Retailer
-
£367 GBP
B+
Retailer 2
-
£465 GBP
View
B+
Retailer 3
-
£476 GBP
View
B+
Retailer 4
-
£485 GBP
View
B+
Retailer 5
-
£522 GBP
View
B+
Retailer 6
-
£560 GBP
View
B+
Retailer 7
-
£573 GBP
View
B+
Retailer 8
-
£592 GBP
View
B+
Retailer 9
-
£597 GBP
View
B
Retailer 10
-
£607 GBP
View
B
Retailer 11
-
£711 GBP
View
B
Retailer 12
-
£1,118 GBP
View
Most Expensive
NZ Jewellers
84051df4-7da8-4e95-a9f0-5bf8baeedf13 · Nov 5
£1,521 GBP
$2,036 USD
View
Price under review
12 more retailers have this diamond
Prices start from £367 GBPSave up to £752 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
£367 GBP