Heart|Natural|GIA

1.20ct F SI2 Heart Natural Diamond

ID • F/SI2 • GIA 6422

Certificate GIA 6422

Diamond specifications and retailer prices

From $5,318 NZD
As of November 4, 2026
Save $6,741 NZD (56%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $13,057 NZD at NZ Jewellers · As of October 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 27 retailers as of November 4, 2026, with a 127% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6422
Dimensions6.47 × 7.25 × 4.07 mm
L/W Ratio1.12
Top View
6.47 mm7.25 mm1.20 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6422
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.2%

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: $12,059 NZD|Low: $5,318 NZD|High: $13,057 NZD|Avg: $7,450 NZD|-7.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$5,318 NZD
Retailer 7$5,374 NZD
Retailer 3$6,270 NZD
Retailer 2$6,512 NZD
Retailer 5$6,714 NZD
Retailer 8$6,790 NZD
Retailer 6$7,235 NZD
NZ Jewellers$12,059 NZD

20 data points across 8 retailers

27 retailers$5,318 NZD to $12,059 NZD

B+
Cheapest Retailer
-
$5,318 NZD
B+
Retailer 2
-
$5,374 NZD
View
B+
Retailer 3
-
$6,270 NZD
View
B+
Retailer 4
-
$6,512 NZD
View
B
Retailer 5
-
$6,714 NZD
View
Retailer 6
-
$6,790 NZD
View
Price last confirmed 37 days ago
Retailer 7
-
$6,790 NZD
View
Price last confirmed 40 days ago
Retailer 8
-
$6,790 NZD
View
Price last confirmed 30 days ago
Retailer 9
-
$6,790 NZD
View
Price last confirmed 26 days ago
Retailer 10
-
$6,790 NZD
View
Price last confirmed 34 days ago
Retailer 11
-
$6,790 NZD
View
Price last confirmed 28 days ago
Retailer 12
-
$6,790 NZD
View
Price last confirmed 31 days ago
Retailer 13
-
$7,051 NZD
View
Price last confirmed 37 days ago
B
Retailer 14
-
$7,235 NZD
View
Retailer 15
-
$7,834 NZD
View
Price last confirmed 62 days ago
Retailer 16
-
$7,834 NZD
View
Price last confirmed 57 days ago
Retailer 17
-
$7,834 NZD
View
Price last confirmed 36 days ago
Retailer 18
-
$7,834 NZD
View
Price last confirmed 39 days ago
Retailer 19
-
$7,834 NZD
View
Price last confirmed 31 days ago
Retailer 20
-
$7,834 NZD
View
Price last confirmed 29 days ago
Retailer 21
-
$7,834 NZD
View
Price last confirmed 39 days ago
B
Retailer 22
-
$12,059 NZD
View
Retailer 23
-
$13,057 NZD
View
Price last confirmed 39 days ago
Retailer 24
-
$13,057 NZD
View
Price last confirmed 32 days ago
Retailer 25
-
$13,057 NZD
View
Price last confirmed 29 days ago
Retailer 26
-
$13,057 NZD
View
Price last confirmed 40 days ago
Most Expensive
NZ Jewellers
0b6453ec-487b-4a56-8b4f-14b47b2d74d3 · Oct 3
$13,057 NZD
$7,238 USD
View
Price last confirmed 34 days ago
26 more retailers have this diamond
Prices start from $5,318 NZDSave up to $6,741 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
$5,318 NZD