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Marquise|Natural|GIA

0.45ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2557948965

Certificate GIA 2557948965

Diamond specifications and retailer prices

From £425 GBP
$570 USD
As of November 1, 2026
Save £209 GBP (33%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £966 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.45ct natural marquise diamond

This 0.45ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557948965. Listed at 5 retailers as of October 31, 2026, with a 49% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557948965
Dimensions8.14 × 3.90 × 2.36 mm
L/W Ratio2.09
Culet sizeNone
Top View
8.14 mm3.90 mm0.45 ctI / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 2557948965
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £966 GBP|Low: £425 GBP|High: £977 GBP|Avg: £636 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£425 GBP
Retailer 2£502 GBP
Retailer 5£550 GBP
Retailer 3£634 GBP
MOH London£966 GBP

41 data points across 5 retailers

5 retailers£425 GBP to £634 GBP

B
Cheapest Retailer
-
£425 GBP
$570 USD
B
Retailer 2
-
£502 GBP
View
B
Retailer 3
-
£550 GBP
$737 USD
View
B
Retailer 4
-
£634 GBP
€809 EUR
View
Most Expensive
MOH London
79724F968 · Nov 1
£966 GBP
View
Price under review
4 more retailers have this diamond
Prices start from £425 GBPSave up to £209 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.

B
0.45ct Marquise
£425 GBP