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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6561393717

Certificate GIA 6561393717

Diamond specifications and retailer prices

From $1,118 NZD
As of November 6, 2026
Save $699 NZD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,818 NZD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 6561393717. Listed at 9 retailers as of November 6, 2026, with prices from $1,118 to $1,818, a $699 spread on the same certified stone. Wholesale Diamonds Direct lists it at $1,818. 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
SymmetryVery Good
FluorescenceFaint
Crown angle40.37°
Pavilion angle38.41°
OriginNatural
Grading LabGIA
CertificateGIA 6561393717
Dimensions4.74 × 5.49 × 3.26 mm
L/W Ratio1.16
Culet sizeNone
Top View
4.74 mm5.49 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6561393717
Side View
Table 58.0%Crown 40.37°Girdle: STK-THKPavilion 38.41°Culet: NoneDepth 59.4%

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 6
Current: $1,414 NZD|Low: $1,118 NZD|High: $1,927 NZD|Avg: $1,500 NZD|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 7, 2026
Retailer 5$1,118 NZD
Retailer 8$1,216 NZD
Retailer 3$1,250 NZD
Retailer 4$1,290 NZD
Retailer 1$1,414 NZD
Retailer 7$1,429 NZD
Retailer 6$1,580 NZD
Retailer 2$1,782 NZD
Wholesale Diamonds Direct$1,818 NZD

42 data points across 9 retailers

9 retailers$1,118 NZD to $1,818 NZD

B+
Cheapest Retailer
-
$1,118 NZD
B+
Retailer 2
-
$1,216 NZD
View
B+
Retailer 3
-
$1,250 NZD
View
B+
Retailer 4
-
$1,290 NZD
View
B
Retailer 5
-
$1,414 NZD
View
B
Retailer 6
-
$1,429 NZD
View
B
Retailer 7
-
$1,580 NZD
View
B
Retailer 8
-
$1,782 NZD
View
Most Expensive
B
Wholesale Diamonds Direct
545794721 · Nov 6
$1,818 NZD
$1,008 USD
View
8 more retailers have this diamond
Prices start from $1,118 NZDSave up to $699 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
$1,118 NZD