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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6542649830

Certificate GIA 6542649830

Diamond specifications and retailer prices

From $3,974 NZD
As of November 4, 2026
Save $6,177 NZD (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,151 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-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 6542649830. Listed at 15 retailers as of November 4, 2026, with prices from $3,974 to $10,151, a $6,177 spread on the same certified stone. NZ Jewellers lists it at $10,151. 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

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.21°
Pavilion angle38.86°
OriginNatural
Grading LabGIA
CertificateGIA 6542649830
Dimensions7.33 × 6.44 × 4.11 mm
L/W Ratio1.14
Top View
7.33 mm6.44 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542649830
Side View
Table 58.0%Crown 37.21°Girdle: Very ThickPavilion 38.86°Culet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $10,151 NZD|Low: $3,384 NZD|High: $10,151 NZD|Avg: $5,695 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$4,061 NZD
Retailer 8$4,398 NZD
Retailer 9$4,398 NZD
Retailer 6$4,602 NZD
Retailer 2$4,773 NZD
Retailer 7$4,791 NZD
Retailer 3$5,138 NZD
Retailer 4$8,482 NZD
NZ Jewellers$10,151 NZD

43 data points across 9 retailers

15 retailers$3,974 NZD to $10,151 NZD

B+
Cheapest Retailer
-
$3,974 NZD
B+
Retailer 2
-
$4,061 NZD
View
Final sale: no returns
B+
Retailer 3
-
$4,243 NZD
View
B+
Retailer 4
-
$4,398 NZD
View
Retailer 5
-
$4,398 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$4,602 NZD
View
B+
Retailer 7
-
$4,773 NZD
View
B+
Retailer 8
-
$4,791 NZD
View
B
Retailer 9
-
$5,051 NZD
View
B
Retailer 10
-
$5,051 NZD
View
B
Retailer 11
-
$5,076 NZD
View
B+
Retailer 12
-
$5,138 NZD
View
B
Retailer 13
-
$5,213 NZD
View
B
Retailer 14
-
$8,482 NZD
View
Most Expensive
B
NZ Jewellers
5fd23dc7-293c-4423-baa7-ab88def76700 · Nov 5
$10,151 NZD
$5,627 USD
View
14 more retailers have this diamond
Prices start from $3,974 NZDSave up to $6,177 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.

B+
1.21ct Heart
$3,974 NZD