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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

VG • K/SI2 • GIA 5231702396

Certificate GIA 5231702396

Diamond specifications and retailer prices

From $4,107 NZD
As of November 1, 2026
Save $4,481 NZD (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,588 NZD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231702396. Listed at 6 retailers as of November 1, 2026, with prices from $4,107 to $8,588, a $4,481 spread on the same certified stone. NZ Jewellers lists it at $8,588. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.76°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 5231702396
Dimensions7.10 × 8.09 × 4.52 mm
L/W Ratio1.14
Top View
7.10 mm8.09 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231702396
Side View
Table 65.0%Crown 36.76°GirdlePavilion 39.2°CuletDepth 55.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,588 NZD|Low: $4,107 NZD|High: $8,794 NZD|Avg: $5,294 NZD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$4,107 NZD
Retailer 3$4,115 NZD
Retailer 7$4,172 NZD
Retailer 4$4,185 NZD
Retailer 5$4,297 NZD
Retailer 8$4,800 NZD
Retailer 2$7,198 NZD
NZ Jewellers$8,588 NZD

28 data points across 8 retailers

6 retailers$4,107 NZD to $8,588 NZD

B+
Cheapest Retailer
-
$4,107 NZD
A
Retailer 2
-
$4,115 NZD
View
B+
Retailer 3
-
$4,185 NZD
View
A
Retailer 4
-
$4,297 NZD
View
B
Retailer 5
-
$7,198 NZD
View
Most Expensive
B
NZ Jewellers
0c10475e-b2b2-4a52-9d4f-29eae574bb71 · Nov 3
$8,588 NZD
$4,761 USD
View
5 more retailers have this diamond
Prices start from $4,107 NZDSave up to $4,481 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
$4,107 NZD