CaratHunter
Plans
Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 5426090686

Certificate GIA 5426090686

Diamond specifications and retailer prices

From $3,832 AUD
As of November 4, 2026
Save $4,865 AUD (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $8,697 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5426090686. Listed at 25 retailers as of November 4, 2026, with prices from $3,832 to $8,697, a $4,865 spread on the same certified stone. NZ Jewellers lists it at $8,697. 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

1.21
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5426090686
Dimensions6.59 × 7.07 × 4.31 mm
L/W Ratio1.07
Top View
6.59 mm7.07 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5426090686
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.9%

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 4
Current: $4,851 AUD|Low: $3,966 AUD|High: $8,449 AUD|Avg: $5,210 AUD|+14.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$3,966 AUD
Retailer 6$4,050 AUD
Retailer 9$4,523 AUD
Retailer 8$4,697 AUD
Retailer 1$4,851 AUD
Retailer 2$4,909 AUD
Retailer 4$5,165 AUD
Retailer 3$5,811 AUD
Retailer 5$8,326 AUD

41 data points across 9 retailers

25 retailers$3,832 AUD to $8,697 AUD

B+
Cheapest Retailer
-
$3,832 AUD
B+
Retailer 2
-
$3,896 AUD
View
B+
Retailer 3
-
$3,966 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,999 AUD
View
B+
Retailer 5
-
$4,050 AUD
View
Retailer 6
-
$4,523 AUD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$4,523 AUD
View
B
Retailer 8
-
$4,554 AUD
View
B
Retailer 9
-
$4,622 AUD
View
B
Retailer 10
-
$4,697 AUD
View
B
Retailer 11
-
$4,851 AUD
View
B
Retailer 12
-
$4,870 AUD
View
B
Retailer 13
-
$4,909 AUD
View
B
Retailer 14
-
$4,913 AUD
View
B
Retailer 15
-
$5,138 AUD
View
B
Retailer 16
-
$5,138 AUD
View
B
Retailer 17
-
$5,165 AUD
View
B
Retailer 18
-
$5,219 AUD
View
B
Retailer 19
-
$5,312 AUD
View
Retailer 20
-
$5,657 AUD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$5,811 AUD
View
B
Retailer 22
-
$5,864 AUD
View
B
Retailer 23
-
$7,206 AUD
View
B
Retailer 24
-
$8,326 AUD
View
Most Expensive
B
NZ Jewellers
b2c6f282-9c68-4ba7-94d9-d58a71100785 · Nov 5
$8,697 AUD
$5,976 USD
View
24 more retailers have this diamond
Prices start from $3,832 AUDSave up to $4,865 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.

B+
1.21ct Heart
$3,832 AUD