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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 $2,829 AUD
As of November 6, 2026
Save $3,818 AUD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,647 AUD 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 $2,829 to $6,647, a $3,818 spread on the same certified stone. NZ Jewellers lists it at $6,647. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,647 AUD|Low: $3,196 AUD|High: $6,647 AUD|Avg: $4,600 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$3,196 AUD
Retailer 3$3,487 AUD
Retailer 2$3,946 AUD
Retailer 6$4,611 AUD
Retailer 4$5,554 AUD
NZ Jewellers$6,647 AUD

44 data points across 6 retailers

8 retailers$2,829 AUD to $6,647 AUD

B+
Cheapest Retailer
-
$2,829 AUD
B+
Retailer 2
-
$3,144 AUD
View
B+
Retailer 3
-
$3,196 AUD
View
B+
Retailer 4
-
$3,487 AUD
View
B+
Retailer 5
-
$3,946 AUD
View
B
Retailer 6
-
$4,611 AUD
View
B
Retailer 7
-
$5,554 AUD
View
Most Expensive
B
NZ Jewellers
42e04ff4-d731-41b3-a91f-50d176a163f2 · Nov 5
$6,647 AUD
$4,567 USD
View
7 more retailers have this diamond
Prices start from $2,829 AUDSave up to $3,818 AUD

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
$2,829 AUD