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Round|Natural|GIA

1.25ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1548168345

Certificate GIA 1548168345

Diamond specifications and retailer prices

From $1,707 AUD
As of November 4, 2026
Save $3,486 AUD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,193 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1548168345. Listed at 12 retailers as of November 4, 2026, with prices from $1,707 to $5,193, a $3,486 spread on the same certified stone. NZ Jewellers lists it at $5,193. 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

1.25
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1548168345
Dimensions6.81 × 6.86 × 4.27 mm
L/W Ratio1.01
Cert comments
Additional twinning wisps, pinpoints, internal graining and surface graining are not shown.
Key to symbols
Twinning Wisp, Crystal
Top View
6.81 mm6.86 mm1.25 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1548168345
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.4%

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 4
Current: $5,193 AUD|Low: $1,707 AUD|High: $8,047 AUD|Avg: $3,224 AUD
NZ Jewellers
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
November 6, 2026
Retailer 9$1,707 AUD
Retailer 12$1,787 AUD
Retailer 4$1,928 AUD
Retailer 13$1,928 AUD
Retailer 3$2,017 AUD
Retailer 11$2,046 AUD
Retailer 14$2,086 AUD
Retailer 2$2,093 AUD
Retailer 10$2,226 AUD
Retailer 8$2,598 AUD
Retailer 7$2,941 AUD
Retailer 6$3,438 AUD
NZ Jewellers$5,193 AUD
Retailer 5$8,047 AUD

19 data points across 14 retailers

12 retailers$1,707 AUD to $5,193 AUD

A
Cheapest Retailer
-
$1,707 AUD
A
Retailer 2
-
$1,787 AUD
View
Retailer 3
-
$1,928 AUD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$1,928 AUD
View
A
Retailer 5
-
$2,017 AUD
View
A
Retailer 6
-
$2,046 AUD
View
B+
Retailer 7
-
$2,086 AUD
View
A
Retailer 8
-
$2,093 AUD
View
B+
Retailer 9
-
$2,226 AUD
View
B+
Retailer 10
-
$2,598 AUD
View
B+
Retailer 11
-
$2,941 AUD
View
Most Expensive
C
NZ Jewellers
da9be6db-bdfb-48aa-a6fa-94ccf466ae26 · Nov 5
$5,193 AUD
$3,635 USD
View
11 more retailers have this diamond
Prices start from $1,707 AUDSave up to $3,486 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
1.25ct Round
$1,707 AUD