CaratHunter
Plans
Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 3535478628

Certificate GIA 3535478628

Diamond specifications and retailer prices

From £334 GBP
As of November 6, 2026
Save £91 GBP (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £425 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 3535478628. Listed at 4 retailers as of November 6, 2026, with prices from £334 to £425, a £91 spread on the same certified stone. 77 Diamonds lists it at £425. 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
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 3535478628
Dimensions4.83 × 5.68 × 3.28 mm
L/W Ratio1.18
Top View
4.83 mm5.68 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 3535478628
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.7%

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: £425 GBP|Low: £303 GBP|High: £456 GBP|Avg: £377 GBP|-5.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£334 GBP
Retailer 2£344 GBP
Retailer 3£375 GBP
77 Diamonds£425 GBP

42 data points across 4 retailers

4 retailers£334 GBP to £425 GBP

A
Cheapest Retailer
-
£334 GBP
A
Retailer 2
-
£344 GBP
View
Final sale: no returns
B+
Retailer 3
-
£375 GBP
View
Most Expensive
B+
77 Diamonds
HSCPUEHHRWVD · Nov 6
£425 GBP
View
3 more retailers have this diamond
Prices start from £334 GBPSave up to £91 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
£334 GBP