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Marquise|Natural|GIA

0.50ct K SI2 Marquise Natural Diamond

VG • K/SI2 • GIA 6465636161

Certificate GIA 6465636161

Diamond specifications and retailer prices

From £211 GBP
As of November 6, 2026
Save £451 GBP (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,100 GBP at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6465636161. Listed at 15 retailers as of November 4, 2026, with a 214% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6465636161
Dimensions7.56 × 4.16 × 2.66 mm
L/W Ratio1.82
Top View
7.56 mm4.16 mm0.50 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6465636161
Side View
Table 56.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.0%

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: £1,100 GBP|Low: £211 GBP|High: £1,100 GBP|Avg: £421 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
November 6, 2026
Retailer 2£211 GBP
Retailer 11£248 GBP
Retailer 13£287 GBP
Retailer 10£299 GBP
Retailer 5£306 GBP
Retailer 12£309 GBP
Retailer 6£331 GBP
Retailer 7£368 GBP
Retailer 4£385 GBP
Retailer 3£386 GBP
Retailer 14£416 GBP
Retailer 9£521 GBP
Retailer 8£662 GBP
NZ Jewellers£1,100 GBP

40 data points across 14 retailers

15 retailers£211 GBP to £662 GBP

A
Cheapest Retailer
-
£211 GBP
B+
Retailer 2
-
£248 GBP
View
Retailer 3
-
£287 GBP
View
Price last confirmed 17 days ago
B+
Retailer 4
-
£299 GBP
View
B+
Retailer 5
-
£306 GBP
View
Retailer 6
-
£309 GBP
View
Price last confirmed 21 days ago
Retailer 7
-
£321 GBP
View
Price last confirmed 21 days ago
B+
Retailer 8
-
£331 GBP
View
B+
Retailer 9
-
£368 GBP
View
B+
Retailer 10
-
£385 GBP
View
Retailer 11
-
£386 GBP
View
Price last confirmed 18 days ago
B+
Retailer 12
-
£416 GBP
View
B
Retailer 13
-
£521 GBP
View
B
Retailer 14
-
£662 GBP
View
Most Expensive
NZ Jewellers
f37dc48c-1ddc-4d90-99cb-6d2220e3e1c3 · Oct 17
£1,100 GBP
$1,473 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from £211 GBPSave up to £451 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
£211 GBP