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Round|Natural|GIA

1.31ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6525684517

Certificate GIA 6525684517

Diamond specifications and retailer prices

From $3,078 AUD
As of November 5, 2026
Save $1,061 AUD (26%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,378 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525684517. Listed at 9 retailers as of November 5, 2026, with a 34% 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6525684517
Dimensions6.96 × 6.92 × 4.36 mm
L/W Ratio1.01
Star length50%
Top View
6.96 mm6.92 mm1.31 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6525684517
Side View
Table 58.0%Crown 36°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $3,294 AUD|Low: $3,078 AUD|High: $4,164 AUD|Avg: $3,540 AUD|+5.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$3,078 AUD
Retailer 1$3,294 AUD
Retailer 2$3,723 AUD
Retailer 3$4,140 AUD

43 data points across 4 retailers

9 retailers$3,078 AUD to $4,140 AUD

Retailer 1
-
$3,051 AUD
Price last confirmed 29 days ago
Retailer 2
-
$3,051 AUD
View
Price last confirmed 29 days ago
B+
Retailer 3
-
$3,078 AUD
View
Retailer 4
-
$3,191 AUD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
$3,294 AUD
View
Retailer 6
-
$3,520 AUD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$3,723 AUD
View
B
Retailer 8
-
$4,140 AUD
View
Most Expensive
NZ Jewellers
c1851886-c0c8-4082-8292-5bace548ae8c · Sep 26
$6,378 AUD
$4,465 USD
View
Price last confirmed 40 days ago
8 more retailers have this diamond
Prices start from $3,078 AUDSave up to $1,061 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 Round
$3,078 AUD