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Heart|Natural|GIA

1.31ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 7541510309

Certificate GIA 7541510309

Diamond specifications and retailer prices

From $3,930 AUD
As of November 6, 2026
Save $5,055 AUD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,852 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E 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 7541510309. Listed at 21 retailers as of November 5, 2026, with a 129% 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

1.31
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7541510309
Dimensions7.71 × 6.91 × 4.42 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.71 mm6.91 mm1.31 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7541510309
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.3%

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: $9,852 AUD|Low: $3,930 AUD|High: $9,879 AUD|Avg: $6,146 AUD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 12$3,930 AUD
Retailer 2$4,095 AUD
Retailer 13$4,963 AUD
Retailer 7$5,002 AUD
Retailer 6$5,156 AUD
Retailer 14$5,156 AUD
Retailer 9$5,335 AUD
Retailer 3$5,354 AUD
Retailer 8$5,464 AUD
Retailer 4$5,950 AUD
Retailer 10$6,293 AUD
Retailer 11$8,600 AUD
Retailer 5$8,984 AUD
Queensmith$9,852 AUD

26 data points across 14 retailers

21 retailers$3,930 AUD to $8,984 AUD

A
Cheapest Retailer
-
$3,930 AUD
A
Retailer 2
-
$4,095 AUD
View
A
Retailer 3
-
$4,691 AUD
View
A
Retailer 4
-
$4,759 AUD
View
Final sale: no returns
A
Retailer 5
-
$4,934 AUD
View
A
Retailer 6
-
$4,963 AUD
View
A
Retailer 7
-
$5,002 AUD
View
Retailer 8
-
$5,156 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$5,156 AUD
View
A
Retailer 10
-
$5,335 AUD
View
A
Retailer 11
-
$5,354 AUD
View
A
Retailer 12
-
$5,368 AUD
View
A
Retailer 13
-
$5,400 AUD
View
A
Retailer 14
-
$5,464 AUD
View
Retailer 15
-
$5,523 AUD
View
Price last confirmed 29 days ago
A
Retailer 16
-
$5,529 AUD
View
A
Retailer 17
-
$5,950 AUD
View
B+
Retailer 18
-
$6,293 AUD
View
B+
Retailer 19
-
$8,600 AUD
View
B
Retailer 20
-
$8,984 AUD
View
Most Expensive
Queensmith
7541510309 · Oct 28
$9,852 AUD
£5,330 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from $3,930 AUDSave up to $5,055 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
1.31ct Heart
$3,930 AUD