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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6565678111

Certificate GIA 6565678111

Diamond specifications and retailer prices

From $3,929 NZD
As of November 5, 2026
Save $3,166 NZD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,095 NZD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565678111. Listed at 8 retailers as of November 5, 2026, with prices from $3,929 to $7,095, a $3,166 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,095. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.47°
Pavilion angle38.33°
OriginNatural
Grading LabGIA
CertificateGIA 6565678111
Dimensions7.81 × 6.95 × 4.66 mm
L/W Ratio1.12
Culet sizeNone
Top View
7.81 mm6.95 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565678111
Side View
Table 57.0%Crown 35.47°Girdle: STK-VTKPavilion 38.33°Culet: NDepth 59.6%

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 5
Current: $4,542 NZD|Low: $3,923 NZD|High: $7,095 NZD|Avg: $4,835 NZD|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 6, 2026
Retailer 2$3,929 NZD
Retailer 7$4,043 NZD
Retailer 3$4,172 NZD
Retailer 4$4,245 NZD
Retailer 1$4,542 NZD
Retailer 6$4,622 NZD
Retailer 5$5,002 NZD
Wholesale Diamonds Direct$7,095 NZD

16 data points across 8 retailers

8 retailers$3,929 NZD to $7,095 NZD

A
Cheapest Retailer
-
$3,929 NZD
A
Retailer 2
-
$4,043 NZD
View
A
Retailer 3
-
$4,172 NZD
View
A
Retailer 4
-
$4,245 NZD
View
A
Retailer 5
-
$4,542 NZD
View
A
Retailer 6
-
$4,622 NZD
View
B+
Retailer 7
-
$5,002 NZD
View
Most Expensive
B+
Wholesale Diamonds Direct
585254021 · Nov 6
$7,095 NZD
$3,933 USD
View
7 more retailers have this diamond
Prices start from $3,929 NZDSave up to $3,166 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
1.51ct Heart
$3,929 NZD