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Heart|Natural|GIA

1.00ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 1553596973

Certificate GIA 1553596973

Diamond specifications and retailer prices

From $1,818 AUD
As of November 6, 2026
Save $1,845 AUD (50%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,025 AUD at NZ Jewellers · As of September 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553596973. Listed at 16 retailers as of November 1, 2026, with a 102% 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

1.00
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.83°
Pavilion angle38.79°
OriginNatural
Grading LabGIA
CertificateGIA 1553596973
Dimensions6.97 × 6.08 × 3.84 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle, Etch Channel
Top View
6.97 mm6.08 mm1.00 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1553596973
Side View
Table 64.0%Crown 37.83°Girdle: Very ThickPavilion 38.79°Culet: NoneDepth 55.1%

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: $1,818 AUD|Low: $1,470 AUD|High: $3,820 AUD|Avg: $2,413 AUD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1$1,818 AUD
Retailer 5$1,827 AUD
Retailer 6$1,937 AUD
Retailer 3$2,061 AUD
Retailer 10$2,093 AUD
Retailer 2$2,097 AUD
Retailer 8$2,167 AUD
Retailer 4$2,171 AUD
Retailer 9$2,230 AUD
Retailer 7$2,733 AUD
Retailer 11$3,663 AUD

35 data points across 11 retailers

16 retailers$1,818 AUD to $3,663 AUD

A
Cheapest Retailer
-
$1,818 AUD
Final sale: no returns
A
Retailer 2
-
$1,827 AUD
View
A
Retailer 3
-
$1,937 AUD
View
Retailer 4
-
$2,061 AUD
View
Price last confirmed 8 days ago
Retailer 5
-
$2,061 AUD
View
Price last confirmed 41 days ago
Retailer 6
-
$2,061 AUD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$2,093 AUD
View
A
Retailer 8
-
$2,097 AUD
View
A
Retailer 9
-
$2,167 AUD
View
A
Retailer 10
-
$2,171 AUD
View
A
Retailer 11
-
$2,230 AUD
View
Retailer 12
-
$2,378 AUD
View
Price last confirmed 61 days ago
Retailer 13
-
$2,378 AUD
View
Price last confirmed 43 days ago
B+
Retailer 14
-
$2,733 AUD
View
B+
Retailer 15
-
$3,663 AUD
View
Most Expensive
NZ Jewellers
d70c30ee-10c2-461f-a977-d0efbba75e88 · Sep 26
$5,025 AUD
$3,453 USD
View
Price last confirmed 41 days ago
15 more retailers have this diamond
Prices start from $1,818 AUDSave up to $1,845 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
$1,818 AUD