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Heart|Natural|GIA

1.02ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2378237146

Certificate GIA 2378237146

Diamond specifications and retailer prices

From $1,956 AUD
As of November 6, 2026
Save $1,986 AUD (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,943 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.02ct natural heart diamond

This 1.02ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2378237146. Listed at 9 retailers as of November 2, 2026, with prices from $1,956 to $3,943, a $1,986 spread on the same certified stone. MOH London lists it at $3,943. 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

1.02
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2378237146
Dimensions5.99 × 4.98 × 3.83 mm
L/W Ratio1.20
Top View
5.99 mm4.98 mm1.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2378237146
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 77.0%

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: $3,943 AUD|Low: $1,937 AUD|High: $3,985 AUD|Avg: $2,618 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$1,956 AUD
Retailer 7$2,088 AUD
Retailer 2$2,182 AUD
Retailer 5$2,486 AUD
Retailer 8$2,576 AUD
Retailer 4$2,745 AUD
Retailer 3$3,053 AUD
MOH London$3,943 AUD

30 data points across 8 retailers

9 retailers$1,956 AUD to $3,943 AUD

A
Cheapest Retailer
-
$1,956 AUD
B+
Retailer 2
-
$2,086 AUD
View
A
Retailer 3
-
$2,088 AUD
View
B+
Retailer 4
-
$2,182 AUD
View
B+
Retailer 5
-
$2,486 AUD
View
B+
Retailer 6
-
$2,576 AUD
View
B+
Retailer 7
-
$2,745 AUD
View
B
Retailer 8
-
$3,053 AUD
View
Most Expensive
B
MOH London
3B29FA4F8 · Nov 2
$3,943 AUD
£2,133 GBP
View
8 more retailers have this diamond
Prices start from $1,956 AUDSave up to $1,986 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
1.02ct Heart
$1,956 AUD