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Oval|Natural|GIA

1.31ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 1548586174

Certificate GIA 1548586174

Diamond specifications and retailer prices

From $3,420 AUD
As of November 5, 2026
Save $1,179 AUD (26%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,829 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.31ct natural oval diamond

This 1.31ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548586174. Listed at 15 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1548586174
Dimensions8.69 × 6.07 × 3.80 mm
L/W Ratio1.43
Girdle conditionFaceted
Top View
8.69 mm6.07 mm1.31 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548586174
Side View
Table 61.0%CrownGirdle: MED-THKPavilion 40.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,599 AUD|Low: $2,775 AUD|High: $6,638 AUD|Avg: $3,937 AUD
Retailer 1
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 8$2,775 AUD
Retailer 14$3,043 AUD
Retailer 12$3,048 AUD
Retailer 2$3,064 AUD
Retailer 4$3,179 AUD
Retailer 13$3,254 AUD
Retailer 9$3,420 AUD
Retailer 5$3,499 AUD
Retailer 3$3,566 AUD
Retailer 16$3,739 AUD
Retailer 10$3,775 AUD
Retailer 11$4,392 AUD
Retailer 6$4,510 AUD
Retailer 1$4,599 AUD
Retailer 15$5,586 AUD
Retailer 7$6,410 AUD

31 data points across 16 retailers

15 retailers$3,420 AUD to $4,599 AUD

Retailer 1
-
$2,775 AUD
Price last confirmed 12 days ago
Retailer 2
-
$3,048 AUD
View
Price last confirmed 12 days ago
Retailer 3
-
$3,064 AUD
View
Price last confirmed 14 days ago
Retailer 4
-
$3,179 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$3,254 AUD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$3,420 AUD
View
Retailer 7
-
$3,566 AUD
View
Price last confirmed 14 days ago
Retailer 8
-
$3,739 AUD
View
Price last confirmed 16 days ago
Retailer 9
-
$3,775 AUD
View
Price last confirmed 13 days ago
Retailer 10
-
$3,847 AUD
View
Price last confirmed 44 days ago
Retailer 11
-
$4,392 AUD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$4,599 AUD
View
Retailer 13
-
$5,586 AUD
View
Price last confirmed 14 days ago
Retailer 14
-
$6,410 AUD
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
89c29fc3-3cfa-43ba-9568-3f72628c7f2c · Sep 25
$7,829 AUD
$5,379 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from $3,420 AUDSave up to $1,179 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 Oval
$3,420 AUD