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Heart|Natural|GIA

1.33ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6512405390

Certificate GIA 6512405390

Diamond specifications and retailer prices

From $5,423 NZD
As of November 4, 2026
Save $6,873 NZD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $12,295 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.33ct natural heart diamond

This 1.33ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512405390. Listed at 18 retailers as of November 4, 2026, with prices from $5,423 to $12,295, a $6,873 spread on the same certified stone. NZ Jewellers lists it at $12,295. 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

1.33
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.68°
Pavilion angle39.45°
OriginNatural
Grading LabGIA
CertificateGIA 6512405390
Dimensions6.68 × 7.51 × 4.47 mm
L/W Ratio1.12
Top View
6.68 mm7.51 mm1.33 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512405390
Side View
Table 60.0%Crown 43.68°Girdle: MED-THKPavilion 39.45°Culet: NoneDepth 59.5%

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 4
Current: $12,295 NZD|Low: $4,634 NZD|High: $12,295 NZD|Avg: $7,624 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
November 6, 2026
Retailer 10$5,460 NZD
Retailer 6$5,563 NZD
Retailer 7$5,901 NZD
Retailer 9$6,393 NZD
Retailer 11$6,393 NZD
Retailer 8$6,640 NZD
Retailer 4$6,763 NZD
Retailer 2$7,147 NZD
Retailer 12$7,378 NZD
Retailer 3$10,197 NZD
Retailer 5$11,803 NZD
NZ Jewellers$12,295 NZD

43 data points across 12 retailers

18 retailers$5,423 NZD to $12,295 NZD

A
Cheapest Retailer
-
$5,423 NZD
A
Retailer 2
-
$5,460 NZD
View
B+
Retailer 3
-
$5,561 NZD
View
B+
Retailer 4
-
$5,563 NZD
View
B+
Retailer 5
-
$5,675 NZD
View
B+
Retailer 6
-
$5,901 NZD
View
Final sale: no returns
B+
Retailer 7
-
$6,393 NZD
View
Retailer 8
-
$6,393 NZD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$6,404 NZD
View
B+
Retailer 10
-
$6,640 NZD
View
Retailer 11
-
$6,763 NZD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$6,952 NZD
View
B+
Retailer 13
-
$7,147 NZD
View
Retailer 14
-
$7,378 NZD
View
Price last confirmed 62 days ago
B
Retailer 15
-
$7,378 NZD
View
B
Retailer 16
-
$10,197 NZD
View
B
Retailer 17
-
$11,803 NZD
View
Most Expensive
B
NZ Jewellers
f5f8786c-eb15-4f22-ba81-4ec7ed7f19c8 · Nov 5
$12,295 NZD
$6,816 USD
View
17 more retailers have this diamond
Prices start from $5,423 NZDSave up to $6,873 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
1.33ct Heart
$5,423 NZD