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Heart|Natural|GIA

1.18ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 1433774555

Certificate GIA 1433774555

Diamond specifications and retailer prices

From $6,843 AUD
As of November 5, 2026
Save $430 AUD (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $7,273 AUD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.18ct natural heart diamond

This 1.18ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1433774555. Listed at 2 retailers as of November 5, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.18
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1433774555
Dimensions6.55 × 7.52 × 4.17 mm
L/W Ratio1.15
Top View
6.55 mm7.52 mm1.18 ctK / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1433774555
Side View
Table 65.0%CrownGirdle: VTN-THKPavilionCulet: Very SmallDepth 55.5%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 5
Current: $7,273 AUD|Low: $6,843 AUD|High: $7,371 AUD|Avg: $7,089 AUD|+1.0%
77 Diamonds
Retailer 2
November 5, 2026
Retailer 2$6,843 AUD
77 Diamonds$7,273 AUD

38 data points across 2 retailers

2 retailers$6,843 AUD to $7,273 AUD

C
Cheapest Retailer
-
$6,843 AUD
Most Expensive
C
77 Diamonds
HSJCXHKRYV4 · Nov 5
$7,273 AUD
£3,935 GBP
View
1 more retailer has this diamond
Prices start from $6,843 AUDSave up to $430 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.

C
1.18ct Heart
$6,843 AUD