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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 2536437263

Certificate GIA 2536437263

Diamond specifications and retailer prices

From $718 NZD
As of November 6, 2026
Save $200 NZD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $918 NZD at 77 Diamonds · As of November 7, 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 H 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 2536437263. Listed at 4 retailers as of November 6, 2026, with prices from $718 to $918, a $200 spread on the same certified stone. 77 Diamonds lists it at $918. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2536437263
Dimensions4.91 × 5.53 × 3.30 mm
L/W Ratio1.13
Top View
4.91 mm5.53 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536437263
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.7%

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: $918 NZD|Low: $687 NZD|High: $1,060 NZD|Avg: $819 NZD|-11.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 2$718 NZD
Retailer 4$745 NZD
Retailer 3$805 NZD
77 Diamonds$918 NZD

42 data points across 4 retailers

4 retailers$718 NZD to $918 NZD

A
Cheapest Retailer
-
$718 NZD
A
Retailer 2
-
$745 NZD
View
Final sale: no returns
B+
Retailer 3
-
$805 NZD
View
Most Expensive
B+
77 Diamonds
HSCPH8ZFXKZU · Nov 7
$918 NZD
£401 GBP
View
3 more retailers have this diamond
Prices start from $718 NZDSave up to $200 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
$718 NZD