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Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6525804276

Certificate GIA 6525804276

Diamond specifications and retailer prices

From $945 NZD
As of November 1, 2026
Save $483 NZD (34%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,225 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6525804276. Listed at 16 retailers as of October 31, 2026, with a 51% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6525804276
Dimensions4.76 × 5.49 × 3.34 mm
L/W Ratio1.15
Top View
4.76 mm5.49 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525804276
Side View
Table 61.0%CrownGirdlePavilionCulet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,225 NZD|Low: $758 NZD|High: $3,225 NZD|Avg: $1,417 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 10$763 NZD
Retailer 2$945 NZD
Retailer 4$949 NZD
Retailer 5$1,028 NZD
Retailer 3$1,108 NZD
Retailer 14$1,108 NZD
Retailer 6$1,187 NZD
Retailer 8$1,261 NZD
Retailer 11$1,266 NZD
Retailer 12$1,288 NZD
Retailer 15$1,380 NZD
Retailer 7$1,546 NZD
Retailer 9$1,587 NZD
Retailer 13$2,378 NZD
NZ Jewellers$3,225 NZD

29 data points across 15 retailers

16 retailers$945 NZD to $1,429 NZD

Retailer 1
-
$763 NZD
Price last confirmed 8 days ago
B+
Retailer 2
-
$945 NZD
View
Retailer 3
-
$1,028 NZD
View
Price last confirmed 9 days ago
Retailer 4
-
$1,108 NZD
View
Price last confirmed 9 days ago
Retailer 5
-
$1,108 NZD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$1,187 NZD
View
Retailer 7
-
$1,187 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,261 NZD
View
Retailer 9
-
$1,266 NZD
View
Price last confirmed 8 days ago
Retailer 10
-
$1,288 NZD
View
Price last confirmed 8 days ago
Retailer 11
-
$1,380 NZD
View
Price last confirmed 5 days ago
B
Retailer 12
-
$1,429 NZD
View
Retailer 13
-
$1,546 NZD
View
Price last confirmed 34 days ago
Retailer 14
-
$1,587 NZD
View
Price last confirmed 8 days ago
Retailer 15
-
$2,378 NZD
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
83a05a61-9849-4b5b-bd93-f7104d6a2321 · Oct 30
$3,225 NZD
$1,788 USD
View
Price under review
15 more retailers have this diamond
Prices start from $945 NZDSave up to $483 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.

B+
0.51ct Heart
$945 NZD