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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 6541270102

Certificate GIA 6541270102

Diamond specifications and retailer prices

From $3,357 NZD
As of November 6, 2026
Save $4,607 NZD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,964 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 6541270102. Listed at 17 retailers as of November 5, 2026, with prices from $3,357 to $7,964, a $4,607 spread on the same certified stone. NZ Jewellers lists it at $7,964. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.92°
OriginNatural
Grading LabGIA
CertificateGIA 6541270102
Dimensions7.45 × 6.15 × 4.27 mm
L/W Ratio1.21
Top View
7.45 mm6.15 mm1.20 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6541270102
Side View
Table 65.0%Crown 34°Girdle: Extremely ThickPavilion 41.92°Culet: 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: $7,964 NZD|Low: $3,357 NZD|High: $8,206 NZD|Avg: $4,649 NZD|-2.9%
NZ Jewellers
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
Retailer 15
November 7, 2026
Retailer 12$3,357 NZD
Retailer 10$3,429 NZD
Retailer 9$3,445 NZD
Retailer 13$3,602 NZD
Retailer 6$3,765 NZD
Retailer 5$3,810 NZD
Retailer 11$3,857 NZD
Retailer 2$3,886 NZD
Retailer 7$3,925 NZD
Retailer 8$4,023 NZD
Retailer 15$4,286 NZD
Retailer 3$4,649 NZD
Retailer 14$5,044 NZD
Retailer 4$6,655 NZD
NZ Jewellers$7,964 NZD

28 data points across 15 retailers

17 retailers$3,357 NZD to $7,964 NZD

A
Cheapest Retailer
-
$3,357 NZD
A
Retailer 2
-
$3,429 NZD
View
Final sale: no returns
A
Retailer 3
-
$3,445 NZD
View
A
Retailer 4
-
$3,602 NZD
View
A
Retailer 5
-
$3,765 NZD
View
A
Retailer 6
-
$3,810 NZD
View
A
Retailer 7
-
$3,857 NZD
View
A
Retailer 8
-
$3,878 NZD
View
A
Retailer 9
-
$3,886 NZD
View
Retailer 10
-
$3,925 NZD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$4,023 NZD
View
A
Retailer 12
-
$4,286 NZD
View
B+
Retailer 13
-
$4,649 NZD
View
Retailer 14
-
$4,825 NZD
View
Price last confirmed 32 days ago
B+
Retailer 15
-
$5,044 NZD
View
B
Retailer 16
-
$6,655 NZD
View
Most Expensive
B
NZ Jewellers
4380634e-7ea0-4409-b831-d3ffec60d129 · Nov 5
$7,964 NZD
$4,415 USD
View
16 more retailers have this diamond
Prices start from $3,357 NZDSave up to $4,607 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
$3,357 NZD