CaratHunter
Plans
Round|Natural|GIA

1.31ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 2557411953

Certificate GIA 2557411953

Diamond specifications and retailer prices

From $4,483 AUD
£2,480 GBP
As of November 1, 2026
Save $3,689 AUD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,469 AUD at NZ Jewellers · As of October 3, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557411953. Listed at 11 retailers as of October 29, 2026, with a 82% 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557411953
Dimensions6.96 × 7.01 × 4.35 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle, Feather
Top View
6.96 mm7.01 mm1.31 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557411953
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 62.2%

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 1
Current: $4,483 AUD|Low: $4,113 AUD|High: $8,262 AUD|Avg: $5,674 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 1$4,483 AUD
Retailer 4$4,486 AUD
Retailer 3$5,007 AUD
Retailer 6$5,068 AUD
Retailer 2$5,665 AUD
Retailer 7$5,809 AUD
Retailer 5$8,172 AUD

31 data points across 7 retailers

11 retailers$4,483 AUD to $8,172 AUD

A
Cheapest Retailer
-
$4,483 AUD
£2,480 GBP
A
Retailer 2
-
$4,486 AUD
$3,151 USD
View
Final sale: no returns
Retailer 3
-
$4,860 AUD
$3,414 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$4,860 AUD
$3,414 USD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$5,007 AUD
£2,769 GBP
View
Retailer 6
-
$5,068 AUD
$3,560 USD
View
Price last confirmed 24 days ago
Retailer 7
-
$5,069 AUD
$3,561 USD
View
Price last confirmed 33 days ago
Retailer 8
-
$5,609 AUD
$3,940 USD
View
Price last confirmed 31 days ago
A
Retailer 9
-
$5,665 AUD
€3,790 EUR
View
B
Retailer 10
-
$8,172 AUD
£4,520 GBP
View
Most Expensive
NZ Jewellers
c43b5840-6924-4435-9b8e-666816816f05 · Oct 3
$8,469 AUD
$5,949 USD
View
Price last confirmed 29 days ago
10 more retailers have this diamond
Prices start from $4,483 AUDSave up to $3,689 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 Round
$4,483 AUD