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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 6525215528

Certificate GIA 6525215528

Diamond specifications and retailer prices

From $698 NZD
As of November 6, 2026
Save $194 NZD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $892 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 6525215528. Listed at 4 retailers as of November 6, 2026, with prices from $698 to $892, a $194 spread on the same certified stone. 77 Diamonds lists it at $892. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525215528
Dimensions4.81 × 5.67 × 3.35 mm
L/W Ratio1.18
Top View
4.81 mm5.67 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525215528
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.1%

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: $892 NZD|Low: $662 NZD|High: $1,016 NZD|Avg: $801 NZD|-10.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 2$698 NZD
Retailer 3$725 NZD
Retailer 4$779 NZD
77 Diamonds$892 NZD

42 data points across 4 retailers

4 retailers$698 NZD to $892 NZD

A
Cheapest Retailer
-
$698 NZD
A
Retailer 2
-
$725 NZD
View
Final sale: no returns
B+
Retailer 3
-
$779 NZD
View
Most Expensive
B+
77 Diamonds
HSCPHRRPCQMU · Nov 7
$892 NZD
£389 GBP
View
3 more retailers have this diamond
Prices start from $698 NZDSave up to $194 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
$698 NZD