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Heart|Natural|GIA

1.00ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6552507767

Certificate GIA 6552507767

Diamond specifications and retailer prices

From $1,426 AUD
As of November 6, 2026
Save $196 AUD (12%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,622 AUD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552507767. Listed at 5 retailers as of November 6, 2026, with a relatively tight 14% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552507767
Dimensions6.12 × 7.11 × 4.18 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
6.12 mm7.11 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552507767
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,622 AUD|Low: $1,349 AUD|High: $1,876 AUD|Avg: $1,583 AUD|-7.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$1,426 AUD
Retailer 4$1,432 AUD
Retailer 3$1,489 AUD
Retailer 5$1,614 AUD
77 Diamonds$1,622 AUD

42 data points across 5 retailers

5 retailers$1,426 AUD to $1,622 AUD

A
Cheapest Retailer
-
$1,426 AUD
A
Retailer 2
-
$1,432 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,489 AUD
View
A
Retailer 4
-
$1,614 AUD
View
Most Expensive
A
77 Diamonds
HSCPGGWRBQAP · Nov 6
$1,622 AUD
£878 GBP
View
4 more retailers have this diamond
Prices start from $1,426 AUDSave up to $196 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
$1,426 AUD