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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6565342064

Certificate GIA 6565342064

Diamond specifications and retailer prices

From £293 GBP
As of November 6, 2026
Save £965 GBP (77%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,258 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 I 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 6565342064. Listed at 18 retailers as of November 5, 2026, with prices from £293 to £1,258, a £965 spread on the same certified stone. NZ Jewellers lists it at £1,258. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565342064
Dimensions7.96 × 4.08 × 2.47 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
7.96 mm4.08 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565342064
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 60.5%

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: £1,258 GBP|Low: £293 GBP|High: £1,258 GBP|Avg: £567 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 12£293 GBP
Retailer 3£401 GBP
Retailer 8£411 GBP
Retailer 7£432 GBP
Retailer 14£432 GBP
Retailer 2£443 GBP
Retailer 11£454 GBP
Retailer 17£463 GBP
Retailer 16£491 GBP
Retailer 9£492 GBP
Retailer 4£499 GBP
Retailer 13£501 GBP
Retailer 6£549 GBP
Retailer 5£598 GBP
Retailer 15£619 GBP
Retailer 10£661 GBP
Retailer 18£925 GBP
NZ Jewellers£1,258 GBP

30 data points across 18 retailers

18 retailers£293 GBP to £1,258 GBP

A
Cheapest Retailer
-
£293 GBP
A
Retailer 2
-
£401 GBP
View
A
Retailer 3
-
£411 GBP
View
A
Retailer 4
-
£432 GBP
View
Retailer 5
-
£432 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£443 GBP
View
Final sale: no returns
B+
Retailer 7
-
£454 GBP
View
A
Retailer 8
-
£463 GBP
View
B+
Retailer 9
-
£491 GBP
View
B+
Retailer 10
-
£492 GBP
View
B+
Retailer 11
-
£499 GBP
View
B+
Retailer 12
-
£501 GBP
View
B+
Retailer 13
-
£549 GBP
View
B+
Retailer 14
-
£598 GBP
View
B
Retailer 15
-
£619 GBP
View
Retailer 16
-
£661 GBP
View
Price last confirmed 22 days ago
B
Retailer 17
-
£925 GBP
View
Most Expensive
B
NZ Jewellers
d0785638-7558-4dea-94ff-7bca7e12f6e5 · Nov 5
£1,258 GBP
$1,684 USD
View
17 more retailers have this diamond
Prices start from £293 GBPSave up to £965 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
£293 GBP