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Heart|Natural|GIA

1.21ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5563084982

Certificate GIA 5563084982

Diamond specifications and retailer prices

From $3,215 AUD
As of November 5, 2026
Save $2,880 AUD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,842 AUD at NZ Jewellers · As of September 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5563084982. Listed at 10 retailers as of November 2, 2026, with a 90% 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

1.21
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.88°
OriginNatural
Grading LabGIA
CertificateGIA 5563084982
Dimensions6.70 × 7.27 × 4.17 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Crystal, Needle
Top View
6.70 mm7.27 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5563084982
Side View
Table 61.0%CrownGirdle: THK-VTKPavilion 36.88°Culet: NoneDepth 57.3%

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: $4,356 AUD|Low: $3,084 AUD|High: $6,760 AUD|Avg: $4,514 AUD|-6.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$3,087 AUD
Retailer 6$3,215 AUD
Retailer 2$3,558 AUD
Retailer 4$4,112 AUD
Retailer 1$4,356 AUD
Retailer 7$5,302 AUD
Retailer 5$6,095 AUD

37 data points across 7 retailers

10 retailers$3,215 AUD to $6,095 AUD

Retailer 1
-
$3,087 AUD
Price last confirmed 3 days ago
A
Retailer 2
-
$3,215 AUD
View
B+
Retailer 3
-
$3,558 AUD
View
Retailer 4
-
$3,751 AUD
View
Price last confirmed 37 days ago
Retailer 5
-
$3,924 AUD
View
Price last confirmed 37 days ago
B+
Retailer 6
-
$4,112 AUD
View
B+
Retailer 7
-
$4,356 AUD
View
B
Retailer 8
-
$5,302 AUD
View
B
Retailer 9
-
$6,095 AUD
View
Most Expensive
NZ Jewellers
7dc53ffb-fc5a-4ad7-9fa2-10cac034a736 · Sep 30
$7,842 AUD
$5,388 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $3,215 AUDSave up to $2,880 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
1.21ct Heart
$3,215 AUD