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Heart|Natural|GIA

0.51ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7521369439

Certificate GIA 7521369439

Diamond specifications and retailer prices

From £237 GBP
$318 USD
As of November 2, 2026
Save £81 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £318 GBP at 77 Diamonds · As of November 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7521369439. Listed at 3 retailers as of November 2, 2026, with prices from £237 to £318, a £81 spread on the same certified stone. 77 Diamonds lists it at £318. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7521369439
Dimensions4.95 × 5.77 × 3.17 mm
L/W Ratio1.17
Culet sizeNone
Key to symbols
Cloud
Top View
4.95 mm5.77 mm0.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7521369439
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 55.0%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £318 GBP|Low: £237 GBP|High: £342 GBP|Avg: £280 GBP|-5.0%
77 Diamonds
Retailer 2
Retailer 3
November 3, 2026
Retailer 2£237 GBP
Retailer 3£251 GBP
77 Diamonds£318 GBP

39 data points across 3 retailers

3 retailers£237 GBP to £318 GBP

B+
Cheapest Retailer
-
£237 GBP
$318 USD
Final sale: no returns
B+
Retailer 2
-
£251 GBP
SGD 455 SGD
View
Most Expensive
B+
77 Diamonds
HSCPMFX4DDKN · Nov 3
£318 GBP
View
2 more retailers have this diamond
Prices start from £237 GBPSave up to £81 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
£237 GBP