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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 3545165671

Certificate GIA 3545165671

Diamond specifications and retailer prices

From $763 NZD
As of November 6, 2026
Save $247 NZD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,010 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545165671. Listed at 4 retailers as of November 6, 2026, with prices from $763 to $1,010, a $247 spread on the same certified stone. Brilliant Earth lists it at $1,010. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545165671
Dimensions4.88 × 5.58 × 3.32 mm
L/W Ratio1.14
Top View
4.88 mm5.58 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545165671
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,010 NZD|Low: $736 NZD|High: $1,154 NZD|Avg: $922 NZD|-12.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 3$763 NZD
Retailer 4$788 NZD
Retailer 2$974 NZD
Brilliant Earth$1,010 NZD

42 data points across 4 retailers

4 retailers$763 NZD to $1,010 NZD

A
Cheapest Retailer
-
$763 NZD
A
Retailer 2
-
$788 NZD
View
Final sale: no returns
B+
Retailer 3
-
$974 NZD
View
Most Expensive
B+
Brilliant Earth
18003753A · Nov 6
$1,010 NZD
$560 USD
View
3 more retailers have this diamond
Prices start from $763 NZDSave up to $247 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
$763 NZD