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Marquise|Natural|GIA

0.45ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6552617193

Certificate GIA 6552617193

Diamond specifications and retailer prices

From £247 GBP
As of November 4, 2026
Save £535 GBP (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,298 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.45ct natural marquise diamond

This 0.45ct natural marquise sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552617193. Listed at 10 retailers as of November 4, 2026, with a 217% 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

0.45
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552617193
Dimensions7.48 × 4.08 × 2.49 mm
L/W Ratio1.83
Girdle conditionSlightly Thick to Very Thick
Key to symbols
Crystal
Top View
7.48 mm4.08 mm0.45 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552617193
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.1%

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 4
Current: £1,298 GBP|Low: £247 GBP|High: £1,328 GBP|Avg: £535 GBP|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4£247 GBP
Retailer 10£287 GBP
Retailer 7£338 GBP
Retailer 3£357 GBP
Retailer 9£364 GBP
Retailer 8£365 GBP
Retailer 6£551 GBP
Retailer 2£681 GBP
Retailer 5£781 GBP
NZ Jewellers£1,298 GBP

30 data points across 10 retailers

10 retailers£247 GBP to £781 GBP

A
Cheapest Retailer
-
£247 GBP
A
Retailer 2
-
£287 GBP
View
A
Retailer 3
-
£338 GBP
View
A
Retailer 4
-
£357 GBP
View
A
Retailer 5
-
£364 GBP
View
A
Retailer 6
-
£365 GBP
View
B+
Retailer 7
-
£551 GBP
View
B
Retailer 8
-
£681 GBP
View
B
Retailer 9
-
£781 GBP
View
Most Expensive
NZ Jewellers
a25a07ff-d282-44e8-b9f2-cf2e3f90a90f · Nov 5
£1,298 GBP
$1,738 USD
View
Price under review
9 more retailers have this diamond
Prices start from £247 GBPSave up to £535 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
0.45ct Marquise
£247 GBP