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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

VG • I/IF • GIA 1545830912

Certificate GIA 1545830912

Diamond specifications and retailer prices

From £513 GBP
$689 USD
As of November 1, 2026
Save £699 GBP (58%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,212 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545830912. Listed at 8 retailers as of November 1, 2026, with prices from £513 to £1,212, a £699 spread on the same certified stone. MOH London lists it at £1,212. 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

0.51
Carat
I
Colour
IF
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545830912
Dimensions8.56 × 4.19 × 2.37 mm
L/W Ratio2.04
Girdle conditionFaceted
Top View
8.56 mm4.19 mm0.51 ctI / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545830912
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 56.4%

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 1
Current: £1,212 GBP|Low: £513 GBP|High: £1,219 GBP|Avg: £722 GBP|+22.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6£513 GBP
Retailer 5£525 GBP
Retailer 7£623 GBP
Retailer 2£643 GBP
Retailer 3£746 GBP
Retailer 8£810 GBP
Retailer 4£810 GBP
MOH London£1,212 GBP

45 data points across 8 retailers

8 retailers£513 GBP to £1,212 GBP

A
Cheapest Retailer
-
£513 GBP
$689 USD
A
Retailer 2
-
£525 GBP
$704 USD
View
A
Retailer 3
-
£623 GBP
$837 USD
View
A
Retailer 4
-
£643 GBP
View
B+
Retailer 5
-
£746 GBP
€953 EUR
View
Retailer 6
-
£810 GBP
A$1,672 AUD
View
Price last confirmed 29 days ago
B+
Retailer 7
-
£810 GBP
ZAR 17,563 ZAR
View
Most Expensive
B
MOH London
EA97C2F06 · Nov 2
£1,212 GBP
View
7 more retailers have this diamond
Prices start from £513 GBPSave up to £699 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
0.51ct Marquise
£513 GBP