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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 5563831802

Certificate GIA 5563831802

Diamond specifications and retailer prices

From £486 GBP
As of November 6, 2026
Save £298 GBP (38%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £784 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 5563831802. Listed at 5 retailers as of November 6, 2026, with prices from £486 to £784, a £298 spread on the same certified stone. Wholesale Diamonds Direct lists it at £784. 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 angle36.49°
Pavilion angle37.95°
OriginNatural
Grading LabGIA
CertificateGIA 5563831802
Dimensions4.95 × 5.65 × 3.21 mm
L/W Ratio1.14
Culet sizeNone
Top View
4.95 mm5.65 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5563831802
Side View
Table 57.0%Crown 36.49°Girdle: THN-THKPavilion 37.95°Culet: NoneDepth 56.8%

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: £486 GBP|Low: £486 GBP|High: £784 GBP|Avg: £636 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Wholesale Diamonds Direct
November 6, 2026
Retailer 1£486 GBP
Retailer 3£524 GBP
Retailer 4£616 GBP
Retailer 2£770 GBP
Wholesale Diamonds Direct£784 GBP

1 data point across 5 retailers

5 retailers£486 GBP to £784 GBP

B+
Cheapest Retailer
-
£486 GBP
B+
Retailer 2
-
£524 GBP
View
B
Retailer 3
-
£616 GBP
View
B
Retailer 4
-
£770 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
685102832 · Nov 6
£784 GBP
$1,049 USD
View
4 more retailers have this diamond
Prices start from £486 GBPSave up to £298 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
£486 GBP