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Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 3525150964

Certificate GIA 3525150964

Diamond specifications and retailer prices

From £342 GBP
As of November 6, 2026
Save £96 GBP (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £438 GBP at 77 Diamonds · As of November 5, 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 3525150964. Listed at 4 retailers as of November 5, 2026, with prices from £342 to £438, a £96 spread on the same certified stone. 77 Diamonds lists it at £438. 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
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 3525150964
Dimensions4.75 × 5.56 × 3.31 mm
L/W Ratio1.17
Top View
4.75 mm5.56 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 3525150964
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.6%

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: £438 GBP|Low: £308 GBP|High: £459 GBP|Avg: £384 GBP|-2.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 4£342 GBP
Retailer 2£352 GBP
Retailer 3£385 GBP
77 Diamonds£438 GBP

41 data points across 4 retailers

4 retailers£342 GBP to £438 GBP

A
Cheapest Retailer
-
£342 GBP
A
Retailer 2
-
£352 GBP
View
Final sale: no returns
B+
Retailer 3
-
£385 GBP
View
Most Expensive
B+
77 Diamonds
HSCPTQMKKGNP · Nov 5
£438 GBP
View
3 more retailers have this diamond
Prices start from £342 GBPSave up to £96 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
£342 GBP