CaratHunter
Plans
Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 6541270102

Certificate GIA 6541270102

Diamond specifications and retailer prices

From $2,708 AUD
As of November 6, 2026
Save $3,717 AUD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,426 AUD 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 $2,708 to $6,426, a $3,717 spread on the same certified stone. NZ Jewellers lists it at $6,426. 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: $6,426 AUD|Low: $2,708 AUD|High: $6,621 AUD|Avg: $3,751 AUD|-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$2,708 AUD
Retailer 10$2,767 AUD
Retailer 9$2,780 AUD
Retailer 13$2,906 AUD
Retailer 6$3,037 AUD
Retailer 5$3,074 AUD
Retailer 11$3,112 AUD
Retailer 2$3,135 AUD
Retailer 7$3,167 AUD
Retailer 8$3,246 AUD
Retailer 15$3,458 AUD
Retailer 3$3,751 AUD
Retailer 14$4,069 AUD
Retailer 4$5,369 AUD
NZ Jewellers$6,426 AUD

28 data points across 15 retailers

17 retailers$2,708 AUD to $6,426 AUD

A
Cheapest Retailer
-
$2,708 AUD
A
Retailer 2
-
$2,767 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,780 AUD
View
A
Retailer 4
-
$2,906 AUD
View
A
Retailer 5
-
$3,037 AUD
View
A
Retailer 6
-
$3,074 AUD
View
A
Retailer 7
-
$3,112 AUD
View
A
Retailer 8
-
$3,129 AUD
View
A
Retailer 9
-
$3,135 AUD
View
Retailer 10
-
$3,167 AUD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$3,246 AUD
View
A
Retailer 12
-
$3,458 AUD
View
B+
Retailer 13
-
$3,751 AUD
View
Retailer 14
-
$3,893 AUD
View
Price last confirmed 32 days ago
B+
Retailer 15
-
$4,069 AUD
View
B
Retailer 16
-
$5,369 AUD
View
Most Expensive
B
NZ Jewellers
4380634e-7ea0-4409-b831-d3ffec60d129 · Nov 5
$6,426 AUD
$4,415 USD
View
16 more retailers have this diamond
Prices start from $2,708 AUDSave up to $3,717 AUD

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
$2,708 AUD