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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6545346217

Certificate GIA 6545346217

Diamond specifications and retailer prices

From $2,931 NZD
As of November 6, 2026
Save $3,815 NZD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,592 NZD at NZ Jewellers · As of October 6, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545346217. Listed at 22 retailers as of November 6, 2026, with a 130% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6545346217
Dimensions6.56 × 7.55 × 4.33 mm
L/W Ratio1.15
Top View
6.56 mm7.55 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6545346217
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $6,747 NZD|Low: $2,908 NZD|High: $7,286 NZD|Avg: $4,043 NZD|-7.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 12$2,931 NZD
Retailer 8$3,095 NZD
Retailer 5$3,572 NZD
Retailer 14$3,666 NZD
Retailer 6$3,698 NZD
Retailer 2$3,725 NZD
Retailer 11$3,741 NZD
Retailer 9$3,756 NZD
Retailer 13$3,871 NZD
Retailer 3$4,059 NZD
Retailer 4$4,080 NZD
Retailer 7$4,192 NZD
Retailer 10$4,724 NZD
Retailer 1$6,747 NZD

28 data points across 14 retailers

22 retailers$2,931 NZD to $6,747 NZD

A
Cheapest Retailer
-
$2,931 NZD
A
Retailer 2
-
$3,095 NZD
View
A
Retailer 3
-
$3,572 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,666 NZD
View
A
Retailer 5
-
$3,698 NZD
View
A
Retailer 6
-
$3,725 NZD
View
A
Retailer 7
-
$3,741 NZD
View
A
Retailer 8
-
$3,756 NZD
View
Retailer 9
-
$3,871 NZD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$4,006 NZD
View
A
Retailer 11
-
$4,059 NZD
View
A
Retailer 12
-
$4,080 NZD
View
Retailer 13
-
$4,109 NZD
View
Price last confirmed 26 days ago
Retailer 14
-
$4,109 NZD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$4,192 NZD
View
Retailer 16
-
$4,425 NZD
View
Price last confirmed 37 days ago
B+
Retailer 17
-
$4,522 NZD
View
B+
Retailer 18
-
$4,724 NZD
View
Retailer 19
-
$4,742 NZD
View
Price last confirmed 29 days ago
Retailer 20
-
$5,053 NZD
View
Price last confirmed 32 days ago
B
Retailer 21
-
$6,747 NZD
View
Most Expensive
NZ Jewellers
2edcbfdd-1395-45a7-afdd-932752c2ff52 · Oct 6
$8,592 NZD
$4,763 USD
View
Price last confirmed 31 days ago
21 more retailers have this diamond
Prices start from $2,931 NZDSave up to $3,815 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.

A
1.20ct Heart
$2,931 NZD