Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 25

Certificate GIA 25

Diamond specifications and retailer prices

From $5,975 NZD
As of November 6, 2026
Save $2,287 NZD (28%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $13,769 NZD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 29 retailers as of November 5, 2026, with a 38% 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 25
Dimensions6.41 × 7.56 × 4.14 mm
L/W Ratio1.18
Top View
6.41 mm7.56 mm1.20 ctF / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 25
Side View
Table 62.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 54.8%

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: $13,769 NZD|Low: $5,975 NZD|High: $13,769 NZD|Avg: $7,907 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$5,975 NZD
Retailer 8$6,077 NZD
Retailer 4$7,160 NZD
Retailer 5$7,160 NZD
Retailer 6$7,160 NZD
Retailer 2$7,667 NZD
Retailer 3$8,262 NZD
NZ Jewellers$13,769 NZD

24 data points across 8 retailers

29 retailers$5,975 NZD to $8,262 NZD

B+
Cheapest Retailer
-
$5,975 NZD
B+
Retailer 2
-
$6,077 NZD
View
Retailer 3
-
$7,160 NZD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$7,160 NZD
View
Retailer 5
-
$7,160 NZD
View
Price last confirmed 14 days ago
Retailer 6
-
$7,160 NZD
View
Price last confirmed 9 days ago
Retailer 7
-
$7,160 NZD
View
Price last confirmed 22 days ago
Retailer 8
-
$7,160 NZD
View
Price last confirmed 12 days ago
Retailer 9
-
$7,160 NZD
View
Price last confirmed 9 days ago
Retailer 10
-
$7,160 NZD
View
Price last confirmed 43 days ago
Retailer 11
-
$7,160 NZD
View
Price last confirmed 16 days ago
B
Retailer 12
-
$7,160 NZD
View
Retailer 13
-
$7,160 NZD
View
Price last confirmed 31 days ago
B
Retailer 14
-
$7,667 NZD
View
Retailer 15
-
$8,262 NZD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$8,262 NZD
View
Retailer 17
-
$8,262 NZD
View
Price last confirmed 11 days ago
Retailer 18
-
$8,262 NZD
View
Price last confirmed 57 days ago
Retailer 19
-
$8,262 NZD
View
Price last confirmed 44 days ago
Retailer 20
-
$8,262 NZD
View
Price last confirmed 31 days ago
B
Retailer 21
-
$8,262 NZD
View
Retailer 22
-
$8,262 NZD
View
Price last confirmed 22 days ago
Retailer 23
-
$8,262 NZD
View
Price last confirmed 24 days ago
Retailer 24
-
$13,769 NZD
View
Price last confirmed 32 days ago
Retailer 25
-
$13,769 NZD
View
Price last confirmed 43 days ago
Retailer 26
-
$13,769 NZD
View
Price last confirmed 14 days ago
Retailer 27
-
$13,769 NZD
View
Price last confirmed 11 days ago
Retailer 28
-
$13,769 NZD
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
7a147ca9-5ff2-4c41-bc9c-94cc60f8a822 · Oct 30
$13,769 NZD
$7,633 USD
View
Price last confirmed 7 days ago
28 more retailers have this diamond
Prices start from $5,975 NZDSave up to $2,287 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
$5,975 NZD