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Heart|Natural|GIA

1.40ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6552734884

Certificate GIA 6552734884

Diamond specifications and retailer prices

From $5,791 AUD
As of November 6, 2026
Save $4,174 AUD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,932 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.4ct natural heart diamond

This 1.4ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552734884. Listed at 15 retailers as of November 4, 2026, with a 72% 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

1.40
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6552734884
Dimensions7.65 × 6.54 × 4.56 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.65 mm6.54 mm1.40 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6552734884
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 59.6%

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: $7,062 AUD|Low: $5,194 AUD|High: $10,114 AUD|Avg: $6,920 AUD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$5,209 AUD
Retailer 7$5,791 AUD
Retailer 9$6,274 AUD
Retailer 2$6,356 AUD
Retailer 6$6,625 AUD
Retailer 8$6,727 AUD
Retailer 1$7,062 AUD
Retailer 3$7,658 AUD
Retailer 4$9,965 AUD

37 data points across 9 retailers

15 retailers$5,791 AUD to $9,965 AUD

Retailer 1
-
$5,209 AUD
Price last confirmed 12 days ago
A
Retailer 2
-
$5,791 AUD
View
Final sale: no returns
A
Retailer 3
-
$5,989 AUD
View
Retailer 4
-
$6,274 AUD
View
Price last confirmed 37 days ago
Retailer 5
-
$6,274 AUD
View
Price last confirmed 37 days ago
A
Retailer 6
-
$6,356 AUD
View
B+
Retailer 7
-
$6,625 AUD
View
Retailer 8
-
$6,727 AUD
View
Price last confirmed 34 days ago
Retailer 9
-
$6,753 AUD
View
Price last confirmed 34 days ago
B+
Retailer 10
-
$7,062 AUD
View
Retailer 11
-
$7,241 AUD
View
Price last confirmed 39 days ago
Retailer 12
-
$7,241 AUD
View
Price last confirmed 67 days ago
B+
Retailer 13
-
$7,658 AUD
View
B
Retailer 14
-
$9,965 AUD
View
Most Expensive
NZ Jewellers
ab412556-4873-4471-ba64-879f4ac1dbc9 · Sep 30
$10,932 AUD
$7,511 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $5,791 AUDSave up to $4,174 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
1.40ct Heart
$5,791 AUD