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Heart|Natural|GIA

1.31ct G SI2 Heart Natural Diamond

FR • G/SI2 • GIA 6531940851

Certificate GIA 6531940851

Diamond specifications and retailer prices

From $3,654 AUD
SGD 3,461 SGD
As of October 31, 2026
Save $3,529 AUD (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $8,476 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6531940851. Listed at 5 retailers as of October 31, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
G
Colour
SI2
Clarity
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531940851
Dimensions7.34 × 6.34 × 4.06 mm
L/W Ratio1.16
Top View
7.34 mm6.34 mm1.31 ctG / SI2
OriginNatural
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531940851
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.0%

Caratlytics Score

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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: Oct 31
Current: $7,183 AUD|Low: $3,654 AUD|High: $8,470 AUD|Avg: $4,997 AUD|-11.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2$3,654 AUD
Retailer 5$3,700 AUD
Retailer 3$4,164 AUD
Retailer 9$4,326 AUD
Retailer 4$4,923 AUD
Retailer 8$4,941 AUD
Retailer 6$5,164 AUD
Retailer 7$5,187 AUD
Retailer 1$7,183 AUD

16 data points across 9 retailers

5 retailers$3,654 AUD to $7,183 AUD

A
Cheapest Retailer
-
$3,654 AUD
SGD 3,461 SGD
B+
Retailer 2
-
$4,164 AUD
$2,918 USD
View
Retailer 3
-
$4,408 AUD
$3,089 USD
View
Price last confirmed 41 days ago
B
Retailer 4
-
$7,183 AUD
£3,964 GBP
View
Most Expensive
NZ Jewellers
9d6dd1a0-4b55-4b47-9d7e-cd16334264a0 · Sep 20
$8,476 AUD
$5,940 USD
View
Price last confirmed 42 days ago
4 more retailers have this diamond
Prices start from $3,654 AUDSave up to $3,529 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
$3,654 AUD