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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6562449878

Certificate GIA 6562449878

Diamond specifications and retailer prices

From £474 GBP
As of November 6, 2026
Save £238 GBP (33%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £713 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562449878. Listed at 8 retailers as of November 6, 2026, with prices from £474 to £713, a £238 spread on the same certified stone. Wholesale Diamonds Direct lists it at £713. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.85°
Pavilion angle39.77°
OriginNatural
Grading LabGIA
CertificateGIA 6562449878
Dimensions4.89 × 5.55 × 3.24 mm
L/W Ratio1.13
Culet sizeNone
Top View
4.89 mm5.55 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6562449878
Side View
Table 59.0%Crown 37.85°Girdle: THN-VTKPavilion 39.77°Culet: NoneDepth 58.3%

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: £697 GBP|Low: £474 GBP|High: £713 GBP|Avg: £585 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 6, 2026
Retailer 5£474 GBP
Retailer 2£477 GBP
Retailer 6£507 GBP
Retailer 3£554 GBP
Retailer 4£558 GBP
Retailer 7£618 GBP
Retailer 1£697 GBP
Wholesale Diamonds Direct£713 GBP

24 data points across 8 retailers

8 retailers£474 GBP to £713 GBP

B+
Cheapest Retailer
-
£474 GBP
B+
Retailer 2
-
£477 GBP
View
B
Retailer 3
-
£507 GBP
View
B+
Retailer 4
-
£554 GBP
View
B+
Retailer 5
-
£558 GBP
View
B
Retailer 6
-
£618 GBP
View
B
Retailer 7
-
£697 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
564998639 · Nov 6
£713 GBP
$954 USD
View
7 more retailers have this diamond
Prices start from £474 GBPSave up to £238 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
£474 GBP