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Heart|Natural|GIA

1.31ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6535430494

Certificate GIA 6535430494

Diamond specifications and retailer prices

From $6,002 AUD
As of November 5, 2026
Save $5,098 AUD (46%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $12,674 AUD at NZ Jewellers · As of September 21, 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6535430494. Listed at 5 retailers as of November 4, 2026, with a 85% 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535430494
Dimensions7.42 × 6.15 × 3.91 mm
L/W Ratio1.21
Top View
7.42 mm6.15 mm1.31 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535430494
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,002 AUD|Low: $5,526 AUD|High: $11,646 AUD|Avg: $7,216 AUD|-6.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 7$5,972 AUD
Retailer 1$6,002 AUD
Retailer 2$6,140 AUD
Retailer 3$6,367 AUD
Retailer 5$6,776 AUD
Retailer 10$6,890 AUD
Retailer 9$7,299 AUD
Retailer 8$7,302 AUD
Retailer 6$7,306 AUD
Retailer 11$7,584 AUD
Retailer 4$11,100 AUD

14 data points across 11 retailers

5 retailers$6,002 AUD to $11,100 AUD

B+
Cheapest Retailer
-
$6,002 AUD
Retailer 2
-
$6,590 AUD
View
Price last confirmed 46 days ago
Retailer 3
-
$6,776 AUD
View
Price last confirmed 10 days ago
B
Retailer 4
-
$11,100 AUD
View
Most Expensive
NZ Jewellers
bf7311fe-6661-4c0b-acfa-094dc50d6ea3 · Sep 21
$12,674 AUD
$8,708 USD
View
Price last confirmed 46 days ago
4 more retailers have this diamond
Prices start from $6,002 AUDSave up to $5,098 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.

B+
1.31ct Heart
$6,002 AUD