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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 5241019812

Certificate GIA 5241019812

Diamond specifications and retailer prices

From $5,278 NZD
HK$23,200 HKD
As of November 2, 2026
Save $6,814 NZD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,185 NZD at NZ Jewellers · As of September 25, 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 I 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 5241019812. Listed at 14 retailers as of November 1, 2026, with a 129% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241019812
Dimensions6.52 × 7.77 × 4.94 mm
L/W Ratio1.19
Girdle conditionFaceted
Top View
6.52 mm7.77 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241019812
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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 2
Current: $5,278 NZD|Low: $5,187 NZD|High: $12,724 NZD|Avg: $7,933 NZD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 1$5,278 NZD
Retailer 10$6,058 NZD
Retailer 7$6,347 NZD
Retailer 3$6,650 NZD
Retailer 5$6,779 NZD
Retailer 6$6,793 NZD
Retailer 12$6,985 NZD
Retailer 8$7,873 NZD
Retailer 4$8,442 NZD
Retailer 11$9,027 NZD
Retailer 2$11,167 NZD
Retailer 9$12,092 NZD

29 data points across 12 retailers

14 retailers$5,278 NZD to $12,092 NZD

A
Cheapest Retailer
-
$5,278 NZD
HK$23,200 HKD
A
Retailer 2
-
$6,058 NZD
€3,246 EUR
View
A
Retailer 3
-
$6,347 NZD
$3,571 USD
View
A
Retailer 4
-
$6,650 NZD
SGD 5,056 SGD
View
A
Retailer 5
-
$6,779 NZD
$3,814 USD
View
Final sale: no returns
A
Retailer 6
-
$6,793 NZD
£3,010 GBP
View
A
Retailer 7
-
$6,985 NZD
$3,930 USD
View
A
Retailer 8
-
$7,873 NZD
$4,430 USD
View
B+
Retailer 9
-
$8,165 NZD
A$7,068 AUD
View
Retailer 10
-
$8,442 NZD
A$7,307 AUD
View
Price last confirmed 24 days ago
B+
Retailer 11
-
$9,027 NZD
ZAR 82,049 ZAR
View
B+
Retailer 12
-
$11,167 NZD
$6,283 USD
View
B
Retailer 13
-
$12,092 NZD
£5,357 GBP
View
Most Expensive
NZ Jewellers
866873ad-59aa-4b49-ba40-dce63a4157de · Sep 25
$14,185 NZD
$7,981 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from $5,278 NZDSave up to $6,814 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
$5,278 NZD