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Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6545114668

Certificate GIA 6545114668

Diamond specifications and retailer prices

From £507 GBP
As of November 6, 2026
Save £690 GBP (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,196 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 H 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 6545114668. Listed at 23 retailers as of November 4, 2026, with prices from £507 to £1,196, a £690 spread on the same certified stone. MOH London lists it at £1,196. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle40.5°
OriginNatural
Grading LabGIA
CertificateGIA 6545114668
Dimensions7.90 × 4.06 × 2.58 mm
L/W Ratio1.95
Top View
7.90 mm4.06 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545114668
Side View
Table 58.0%CrownGirdle: THN-VTKPavilion 40.5°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,196 GBP|Low: £507 GBP|High: £1,213 GBP|Avg: £796 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£507 GBP
Retailer 5£545 GBP
Retailer 3£595 GBP
Retailer 10£616 GBP
Retailer 7£721 GBP
Retailer 2£752 GBP
Retailer 6£919 GBP
Retailer 9£983 GBP
Retailer 4£1,009 GBP
MOH London£1,196 GBP

44 data points across 10 retailers

23 retailers£507 GBP to £1,196 GBP

B+
Cheapest Retailer
-
£507 GBP
Final sale: no returns
B+
Retailer 2
-
£581 GBP
View
B+
Retailer 3
-
£592 GBP
View
Retailer 4
-
£592 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£595 GBP
View
B+
Retailer 6
-
£595 GBP
View
B+
Retailer 7
-
£601 GBP
View
B
Retailer 8
-
£616 GBP
View
B
Retailer 9
-
£670 GBP
View
B
Retailer 10
-
£684 GBP
View
B
Retailer 11
-
£721 GBP
View
B
Retailer 12
-
£732 GBP
View
B
Retailer 13
-
£732 GBP
View
B
Retailer 14
-
£732 GBP
View
B
Retailer 15
-
£752 GBP
View
B
Retailer 16
-
£755 GBP
View
B
Retailer 17
-
£803 GBP
View
B
Retailer 18
-
£919 GBP
View
Retailer 19
-
£983 GBP
View
Price last confirmed 33 days ago
B
Retailer 20
-
£1,009 GBP
View
B
Retailer 21
-
£1,054 GBP
View
Most Expensive
B
MOH London
7ED55971B · Nov 4
£1,196 GBP
View
21 more retailers have this diamond
Prices start from £507 GBPSave up to £690 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+
0.50ct Marquise
£507 GBP