Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

GD • F/SI1 • GIA 6561678771

Certificate GIA 6561678771

Diamond specifications and retailer prices

From £374 GBP
As of November 6, 2026
Save £179 GBP (32%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £553 GBP at RockHer · As of November 6, 2026
View at RockHer

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6561678771. Listed at 8 retailers as of November 6, 2026, with prices from £374 to £553, a £179 spread on the same certified stone. RockHer lists it at £553. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561678771
Dimensions5.37 × 6.36 × 1.71 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.37 mm6.36 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6561678771
Side View
Table 75.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 26.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £495 GBP|Low: £374 GBP|High: £574 GBP|Avg: £455 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
RockHer
November 6, 2026
Retailer 4£374 GBP
Retailer 6£409 GBP
Retailer 3£423 GBP
Retailer 1£495 GBP
Retailer 2£504 GBP
Retailer 5£507 GBP
RockHer£553 GBP

6 data points across 7 retailers

8 retailers£374 GBP to £553 GBP

B+
Cheapest Retailer
-
£374 GBP
Final sale: no returns
B+
Retailer 2
-
£409 GBP
View
B
Retailer 3
-
£423 GBP
View
B
Retailer 4
-
£436 GBP
View
B
Retailer 5
-
£495 GBP
View
B
Retailer 6
-
£504 GBP
View
B
Retailer 7
-
£507 GBP
View
Most Expensive
B
RockHer
1871b45b3 · Nov 6
£553 GBP
$740 USD
View
7 more retailers have this diamond
Prices start from £374 GBPSave up to £179 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.

B+
0.51ct Heart
£374 GBP