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Round|Natural|GIA

1.25ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1565352270

Certificate GIA 1565352270

Diamond specifications and retailer prices

From $6,139 AUD
As of November 1, 2026
Save $5,481 AUD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,332 AUD at NZ Jewellers · As of September 28, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1565352270. Listed at 13 retailers as of November 1, 2026, with a 89% 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

1.25
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1565352270
Dimensions6.82 × 6.86 × 4.28 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle
Top View
6.82 mm6.86 mm1.25 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565352270
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: $7,277 AUD|Low: $6,139 AUD|High: $11,681 AUD|Avg: $7,679 AUD|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 11$6,139 AUD
Retailer 8$6,302 AUD
Retailer 10$6,543 AUD
Retailer 9$6,785 AUD
Retailer 3$6,797 AUD
Retailer 2$6,865 AUD
Retailer 4$7,088 AUD
Retailer 12$7,270 AUD
Retailer 1$7,277 AUD
Retailer 5$8,219 AUD
Retailer 7$10,662 AUD
Retailer 6$11,620 AUD

19 data points across 12 retailers

13 retailers$6,139 AUD to $11,620 AUD

A
Cheapest Retailer
-
$6,139 AUD
B+
Retailer 2
-
$6,302 AUD
View
B+
Retailer 3
-
$6,543 AUD
View
B+
Retailer 4
-
$6,785 AUD
View
Retailer 5
-
$6,797 AUD
View
Price last confirmed 26 days ago
Retailer 6
-
$7,078 AUD
View
Price last confirmed 42 days ago
Retailer 7
-
$7,088 AUD
View
Price last confirmed 40 days ago
B+
Retailer 8
-
$7,270 AUD
View
B+
Retailer 9
-
$7,277 AUD
View
B+
Retailer 10
-
$8,219 AUD
View
Retailer 11
-
$10,662 AUD
View
Price last confirmed 12 days ago
B
Retailer 12
-
$11,620 AUD
View
Most Expensive
NZ Jewellers
f736fc90-8d80-4a07-95cf-aa6564149729 · Sep 28
$12,332 AUD
$8,473 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from $6,139 AUDSave up to $5,481 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
$6,139 AUD