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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6247051045

Certificate GIA 6247051045

Diamond specifications and retailer prices

From $3,570 NZD
As of November 5, 2026
Save $5,138 NZD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,707 NZD 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 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 6247051045. Listed at 6 retailers as of November 5, 2026, with prices from $3,570 to $8,707, a $5,138 spread on the same certified stone. NZ Jewellers lists it at $8,707. 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
FluorescenceMedium
Pavilion angle38.34°
OriginNatural
Grading LabGIA
CertificateGIA 6247051045
Dimensions6.61 × 7.21 × 4.32 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
6.61 mm7.21 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6247051045
Side View
Table 60.0%CrownGirdle: THK-VTKPavilion 38.34°CuletDepth 60.0%

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 5
Current: $8,707 NZD|Low: $3,570 NZD|High: $8,776 NZD|Avg: $5,792 NZD|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 6$3,570 NZD
Retailer 5$3,734 NZD
Retailer 4$4,214 NZD
Retailer 3$5,455 NZD
Retailer 2$6,238 NZD
NZ Jewellers$8,707 NZD

26 data points across 6 retailers

6 retailers$3,570 NZD to $8,707 NZD

A
Cheapest Retailer
-
$3,570 NZD
A
Retailer 2
-
$3,734 NZD
View
B+
Retailer 3
-
$4,214 NZD
View
B+
Retailer 4
-
$5,455 NZD
View
B+
Retailer 5
-
$6,238 NZD
View
Most Expensive
B
NZ Jewellers
8e1df945-76d9-4943-91bb-11abc9b194d6 · Nov 5
$8,707 NZD
$4,827 USD
View
5 more retailers have this diamond
Prices start from $3,570 NZDSave up to $5,138 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
$3,570 NZD