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Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6532618685

Certificate GIA 6532618685

Diamond specifications and retailer prices

From $814 NZD
As of November 6, 2026
Save $251 NZD (24%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,064 NZD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

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 6532618685. Listed at 5 retailers as of November 6, 2026, with prices from $814 to $1,064, a $251 spread on the same certified stone. Brilliant Earth lists it at $1,064. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6532618685
Dimensions5.68 × 4.83 × 3.36 mm
L/W Ratio1.18
Top View
5.68 mm4.83 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6532618685
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.2%

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: $1,064 NZD|Low: $754 NZD|High: $1,191 NZD|Avg: $958 NZD|-10.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 3$814 NZD
Retailer 4$837 NZD
Retailer 5$911 NZD
Retailer 2$1,041 NZD
Brilliant Earth$1,064 NZD

42 data points across 5 retailers

5 retailers$814 NZD to $1,064 NZD

A
Cheapest Retailer
-
$814 NZD
A
Retailer 2
-
$837 NZD
View
Final sale: no returns
A
Retailer 3
-
$911 NZD
View
B+
Retailer 4
-
$1,041 NZD
View
Most Expensive
B+
Brilliant Earth
16020128A · Nov 6
$1,064 NZD
$590 USD
View
4 more retailers have this diamond
Prices start from $814 NZDSave up to $251 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
$814 NZD