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Heart|Natural|GIA

1.20ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2498419657

Certificate GIA 2498419657

Diamond specifications and retailer prices

From $3,507 NZD
As of November 6, 2026
Save $4,732 NZD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,238 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-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 2498419657. Listed at 8 retailers as of November 5, 2026, with prices from $3,507 to $8,238, a $4,732 spread on the same certified stone. NZ Jewellers lists it at $8,238. 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

1.20
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2498419657
Dimensions6.73 × 7.21 × 4.09 mm
L/W Ratio1.07
Top View
6.73 mm7.21 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2498419657
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 56.7%

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 6
Current: $8,238 NZD|Low: $3,961 NZD|High: $8,238 NZD|Avg: $5,702 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$3,961 NZD
Retailer 3$4,322 NZD
Retailer 2$4,890 NZD
Retailer 6$5,715 NZD
Retailer 4$6,884 NZD
NZ Jewellers$8,238 NZD

44 data points across 6 retailers

8 retailers$3,507 NZD to $8,238 NZD

B+
Cheapest Retailer
-
$3,507 NZD
B+
Retailer 2
-
$3,896 NZD
View
B+
Retailer 3
-
$3,961 NZD
View
B+
Retailer 4
-
$4,322 NZD
View
B+
Retailer 5
-
$4,890 NZD
View
B
Retailer 6
-
$5,715 NZD
View
B
Retailer 7
-
$6,884 NZD
View
Most Expensive
B
NZ Jewellers
42e04ff4-d731-41b3-a91f-50d176a163f2 · Nov 5
$8,238 NZD
$4,567 USD
View
7 more retailers have this diamond
Prices start from $3,507 NZDSave up to $4,732 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+
1.20ct Heart
$3,507 NZD