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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 $938 NZD
As of November 6, 2026
Save $223 NZD (19%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,161 NZD 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 $938 to $1,161, a $223 spread on the same certified stone. 77 Diamonds lists it at $1,161. 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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Price History

Last verified: Nov 6
Current: $1,161 NZD|Low: $844 NZD|High: $1,270 NZD|Avg: $1,044 NZD|-6.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$938 NZD
Retailer 3$958 NZD
Retailer 2$1,048 NZD
77 Diamonds$1,161 NZD

42 data points across 4 retailers

4 retailers$938 NZD to $1,161 NZD

A
Cheapest Retailer
-
$938 NZD
A
Retailer 2
-
$958 NZD
View
Final sale: no returns
B+
Retailer 3
-
$1,048 NZD
View
Most Expensive
B+
77 Diamonds
HSCPFXETAGWM · Nov 6
$1,161 NZD
£507 GBP
View
3 more retailers have this diamond
Prices start from $938 NZDSave up to $223 NZD

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
$938 NZD