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Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 1545836843

Certificate GIA 1545836843

Diamond specifications and retailer prices

From $847 AUD
As of November 6, 2026
Save $390 AUD (31%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,237 AUD at Steven Stone · As of November 7, 2026
View at Steven Stone

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 1545836843. Listed at 5 retailers as of November 6, 2026, with prices from $847 to $1,237, a $390 spread on the same certified stone. Steven Stone lists it at $1,237. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545836843
Dimensions4.77 × 5.64 × 3.34 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
4.77 mm5.64 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545836843
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $1,046 AUD|Low: $750 AUD|High: $1,237 AUD|Avg: $932 AUD|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Steven Stone
November 7, 2026
Retailer 4$847 AUD
Retailer 3$860 AUD
Retailer 2$943 AUD
Retailer 1$1,046 AUD
Steven Stone$1,237 AUD

41 data points across 5 retailers

5 retailers$847 AUD to $1,237 AUD

A
Cheapest Retailer
-
$847 AUD
A
Retailer 2
-
$860 AUD
View
Final sale: no returns
B+
Retailer 3
-
$943 AUD
View
B+
Retailer 4
-
$1,046 AUD
View
Most Expensive
B
Steven Stone
333504891 · Nov 7
$1,237 AUD
£669 GBP
View
4 more retailers have this diamond
Prices start from $847 AUDSave up to $390 AUD

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
$847 AUD