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Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 1539219765

Certificate GIA 1539219765

Diamond specifications and retailer prices

From £388 GBP
As of November 6, 2026
Save £92 GBP (19%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £481 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 1539219765. Listed at 4 retailers as of November 6, 2026, with prices from £388 to £481, a £92 spread on the same certified stone. 77 Diamonds lists it at £481. 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
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539219765
Dimensions4.90 × 5.68 × 3.18 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Crystal
Top View
4.90 mm5.68 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1539219765
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 55.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £481 GBP|Low: £350 GBP|High: £526 GBP|Avg: £432 GBP|-6.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£388 GBP
Retailer 3£397 GBP
Retailer 2£434 GBP
77 Diamonds£481 GBP

42 data points across 4 retailers

4 retailers£388 GBP to £481 GBP

A
Cheapest Retailer
-
£388 GBP
A
Retailer 2
-
£397 GBP
View
Final sale: no returns
B+
Retailer 3
-
£434 GBP
View
Most Expensive
B+
77 Diamonds
HSCPFXETAGWM · Nov 6
£481 GBP
View
3 more retailers have this diamond
Prices start from £388 GBPSave up to £92 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
£388 GBP