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Marquise|Natural|GIA

0.50ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 1525288240

Certificate GIA 1525288240

Diamond specifications and retailer prices

From £387 GBP
As of November 6, 2026
Save £828 GBP (68%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,215 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter 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 1525288240. Listed at 6 retailers as of November 4, 2026, with prices from £387 to £1,215, a £828 spread on the same certified stone. MOH London lists it at £1,215. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1525288240
Dimensions8.49 × 4.10 × 2.35 mm
L/W Ratio2.07
Culet sizeNone
Key to symbols
Feather, Cloud
Top View
8.49 mm4.10 mm0.50 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1525288240
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 57.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,215 GBP|Low: £387 GBP|High: £1,231 GBP|Avg: £744 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£387 GBP
Retailer 4£625 GBP
Retailer 3£744 GBP
MOH London£1,215 GBP

41 data points across 4 retailers

6 retailers£387 GBP to £1,215 GBP

A
Cheapest Retailer
-
£387 GBP
B+
Retailer 2
-
£597 GBP
View
B+
Retailer 3
-
£625 GBP
View
Retailer 4
-
£681 GBP
View
Price last confirmed 41 days ago
B+
Retailer 5
-
£744 GBP
View
Most Expensive
B
MOH London
1A2207265 · Nov 4
£1,215 GBP
View
5 more retailers have this diamond
Prices start from £387 GBPSave up to £828 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
£387 GBP