Heart|Natural|GIA

1.50ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 6542475806

Certificate GIA 6542475806

Diamond specifications and retailer prices

From $3,855 NZD
As of November 6, 2026
Save $5,022 NZD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $10,593 NZD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542475806. Listed at 16 retailers as of November 2, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6542475806
Dimensions7.17 × 8.28 × 4.54 mm
L/W Ratio1.15
Top View
7.17 mm8.28 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6542475806
Side View
Table 64.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 54.8%

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 6
Current: $10,593 NZD|Low: $3,810 NZD|High: $10,593 NZD|Avg: $5,684 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 12$3,855 NZD
Retailer 10$3,913 NZD
Retailer 2$4,107 NZD
Retailer 13$4,970 NZD
Retailer 4$5,067 NZD
Retailer 6$5,067 NZD
Retailer 14$5,262 NZD
Retailer 7$5,356 NZD
Retailer 8$5,363 NZD
Retailer 5$5,502 NZD
Retailer 3$5,846 NZD
Retailer 9$6,184 NZD
Retailer 11$8,877 NZD
NZ Jewellers$10,593 NZD

35 data points across 14 retailers

16 retailers$3,855 NZD to $8,877 NZD

A
Cheapest Retailer
-
$3,855 NZD
A
Retailer 2
-
$3,913 NZD
View
A
Retailer 3
-
$4,107 NZD
View
A
Retailer 4
-
$4,807 NZD
View
A
Retailer 5
-
$4,970 NZD
View
Retailer 6
-
$5,067 NZD
View
Price last confirmed 21 days ago
Retailer 7
-
$5,067 NZD
View
Price last confirmed 19 days ago
Retailer 8
-
$5,262 NZD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$5,356 NZD
View
A
Retailer 10
-
$5,363 NZD
View
B+
Retailer 11
-
$5,367 NZD
View
B+
Retailer 12
-
$5,502 NZD
View
Retailer 13
-
$5,846 NZD
View
Price last confirmed 18 days ago
B+
Retailer 14
-
$6,184 NZD
View
B
Retailer 15
-
$8,877 NZD
View
Most Expensive
NZ Jewellers
06b791bb-6a5c-4c82-83ca-7c84a71cfb71 · Oct 18
$10,593 NZD
$5,872 USD
View
Price last confirmed 19 days ago
15 more retailers have this diamond
Prices start from $3,855 NZDSave up to $5,022 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
1.50ct Heart
$3,855 NZD