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Heart|Natural|GIA

1.20ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 5231766973

Certificate GIA 5231766973

Diamond specifications and retailer prices

From $1,994 AUD
As of November 5, 2026
Save $2,877 AUD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,871 AUD at NZ Jewellers · As of November 3, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231766973. Listed at 6 retailers as of November 3, 2026, with prices from $1,994 to $4,871, a $2,877 spread on the same certified stone. NZ Jewellers lists it at $4,871. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.91°
Pavilion angle41.33°
OriginNatural
Grading LabGIA
CertificateGIA 5231766973
Dimensions6.35 × 7.26 × 4.50 mm
L/W Ratio1.14
Top View
6.35 mm7.26 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231766973
Side View
Table 59.0%Crown 38.91°GirdlePavilion 41.33°CuletDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,871 AUD|Low: $1,994 AUD|High: $4,950 AUD|Avg: $2,743 AUD|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$1,994 AUD
Retailer 5$1,997 AUD
Retailer 2$2,054 AUD
Retailer 6$2,090 AUD
Retailer 7$2,438 AUD
Retailer 8$2,519 AUD
Retailer 9$2,822 AUD
Retailer 3$3,657 AUD
NZ Jewellers$4,871 AUD

26 data points across 9 retailers

6 retailers$1,994 AUD to $4,871 AUD

A
Cheapest Retailer
-
$1,994 AUD
A
Retailer 2
-
$1,997 AUD
View
A
Retailer 3
-
$2,054 AUD
View
A
Retailer 4
-
$2,090 AUD
View
B
Retailer 5
-
$3,657 AUD
View
Most Expensive
B
NZ Jewellers
6ef88574-af0f-459b-a711-ebfd9ecd2e29 · Nov 3
$4,871 AUD
$3,347 USD
View
5 more retailers have this diamond
Prices start from $1,994 AUDSave up to $2,877 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.

A
1.20ct Heart
$1,994 AUD