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Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6525935906

Certificate GIA 6525935906

Diamond specifications and retailer prices

From £391 GBP
As of November 6, 2026
Save £94 GBP (19%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £484 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6525935906. Listed at 4 retailers as of November 6, 2026, with prices from £391 to £484, a £94 spread on the same certified stone. 77 Diamonds lists it at £484. 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6525935906
Dimensions4.93 × 5.65 × 3.28 mm
L/W Ratio1.15
Top View
4.93 mm5.65 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6525935906
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.0%

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: £484 GBP|Low: £350 GBP|High: £529 GBP|Avg: £434 GBP|-6.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£391 GBP
Retailer 3£399 GBP
Retailer 2£436 GBP
77 Diamonds£484 GBP

42 data points across 4 retailers

4 retailers£391 GBP to £484 GBP

A
Cheapest Retailer
-
£391 GBP
A
Retailer 2
-
£399 GBP
View
Final sale: no returns
B+
Retailer 3
-
£436 GBP
View
Most Expensive
B+
77 Diamonds
HSCPYCFBHRYV · Nov 6
£484 GBP
View
3 more retailers have this diamond
Prices start from £391 GBPSave up to £94 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
£391 GBP