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Heart|Natural|GIA

1.00ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2406309500

Certificate GIA 2406309500

Diamond specifications and retailer prices

From $1,397 AUD
As of November 6, 2026
Save $2,048 AUD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,445 AUD at MOH London · As of November 2, 2026
View at MOH London

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 2406309500. Listed at 9 retailers as of November 2, 2026, with prices from $1,397 to $3,445, a $2,048 spread on the same certified stone. MOH London lists it at $3,445. 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 2406309500
Dimensions5.27 × 5.14 × 3.91 mm
L/W Ratio1.03
Top View
5.27 mm5.14 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2406309500
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.1%

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: $3,445 AUD|Low: $1,378 AUD|High: $3,482 AUD|Avg: $2,137 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$1,397 AUD
Retailer 10$1,777 AUD
Retailer 2$1,924 AUD
Retailer 4$1,942 AUD
Retailer 7$1,950 AUD
Retailer 9$2,048 AUD
Retailer 8$2,077 AUD
Retailer 5$2,113 AUD
Retailer 3$2,611 AUD
MOH London$3,445 AUD

31 data points across 10 retailers

9 retailers$1,397 AUD to $3,445 AUD

A
Cheapest Retailer
-
$1,397 AUD
B+
Retailer 2
-
$1,744 AUD
View
B+
Retailer 3
-
$1,924 AUD
View
B+
Retailer 4
-
$1,942 AUD
View
B+
Retailer 5
-
$1,950 AUD
View
B+
Retailer 6
-
$2,077 AUD
View
B+
Retailer 7
-
$2,113 AUD
View
B+
Retailer 8
-
$2,611 AUD
View
Most Expensive
B
MOH London
782D7060E · Nov 2
$3,445 AUD
£1,864 GBP
View
8 more retailers have this diamond
Prices start from $1,397 AUDSave up to $2,048 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
$1,397 AUD