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Heart|Natural|GIA

1.00ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6551331596

Certificate GIA 6551331596

Diamond specifications and retailer prices

From $1,760 AUD
As of November 6, 2026
Save $3,924 AUD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,683 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded I 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 6551331596. Listed at 13 retailers as of November 5, 2026, with prices from $1,760 to $5,683, a $3,924 spread on the same certified stone. NZ Jewellers lists it at $5,683. 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551331596
Dimensions5.97 × 6.92 × 4.05 mm
L/W Ratio1.16
Girdle conditionVery Thick
Top View
5.97 mm6.92 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551331596
Side View
Table 54.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 58.5%

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: $5,683 AUD|Low: $1,760 AUD|High: $5,683 AUD|Avg: $2,771 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$1,760 AUD
Retailer 11$1,860 AUD
Retailer 12$2,160 AUD
Retailer 10$2,161 AUD
Retailer 5$2,260 AUD
Retailer 3$2,298 AUD
Retailer 4$2,528 AUD
Retailer 7$2,583 AUD
Retailer 8$2,842 AUD
Retailer 6$3,164 AUD
Retailer 9$4,069 AUD
NZ Jewellers$5,683 AUD

25 data points across 12 retailers

13 retailers$1,760 AUD to $5,683 AUD

A
Cheapest Retailer
-
$1,760 AUD
A
Retailer 2
-
$1,860 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,160 AUD
View
A
Retailer 4
-
$2,161 AUD
View
A
Retailer 5
-
$2,260 AUD
View
A
Retailer 6
-
$2,298 AUD
View
B+
Retailer 7
-
$2,528 AUD
View
B+
Retailer 8
-
$2,583 AUD
View
B+
Retailer 9
-
$2,842 AUD
View
B+
Retailer 10
-
$3,164 AUD
View
Retailer 11
-
$3,177 AUD
View
Price last confirmed 33 days ago
B
Retailer 12
-
$4,069 AUD
View
Most Expensive
B
NZ Jewellers
78097f80-a556-4d92-a4a2-3b91b4f8b8e4 · Nov 5
$5,683 AUD
$3,905 USD
View
12 more retailers have this diamond
Prices start from $1,760 AUDSave up to $3,924 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
1.00ct Heart
$1,760 AUD