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Heart|Natural|GIA

0.51ct I IF Heart Natural Diamond

EX • I/IF • GIA 7546085420

Certificate GIA 7546085420

Diamond specifications and retailer prices

From £335 GBP
As of November 6, 2026
Save £609 GBP (65%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £944 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546085420. Listed at 14 retailers as of November 2, 2026, with prices from £335 to £944, a £609 spread on the same certified stone. MOH London lists it at £944. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
I
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle37.8°
OriginNatural
Grading LabGIA
CertificateGIA 7546085420
Dimensions4.65 × 5.50 × 3.27 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
4.65 mm5.50 mm0.51 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7546085420
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 37.8°Culet: NoneDepth 59.5%

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 6
Current: £944 GBP|Low: £273 GBP|High: £969 GBP|Avg: £507 GBP|-2.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 12£335 GBP
Retailer 13£377 GBP
Retailer 5£381 GBP
Retailer 6£416 GBP
Retailer 2£421 GBP
Retailer 11£430 GBP
Retailer 7£457 GBP
Retailer 8£514 GBP
Retailer 4£557 GBP
Retailer 3£565 GBP
Retailer 10£599 GBP
Retailer 9£631 GBP
MOH London£944 GBP

30 data points across 13 retailers

14 retailers£335 GBP to £944 GBP

A
Cheapest Retailer
-
£335 GBP
A
Retailer 2
-
£377 GBP
View
Final sale: no returns
A
Retailer 3
-
£381 GBP
View
A
Retailer 4
-
£416 GBP
View
A
Retailer 5
-
£421 GBP
View
A
Retailer 6
-
£430 GBP
View
A
Retailer 7
-
£457 GBP
View
A
Retailer 8
-
£514 GBP
View
A
Retailer 9
-
£557 GBP
View
B+
Retailer 10
-
£565 GBP
View
B+
Retailer 11
-
£599 GBP
View
Retailer 12
-
£614 GBP
View
Price last confirmed 34 days ago
B+
Retailer 13
-
£631 GBP
View
Most Expensive
B
MOH London
43628ED66 · Nov 2
£944 GBP
View
13 more retailers have this diamond
Prices start from £335 GBPSave up to £609 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 Heart
£335 GBP