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Round|Natural|GIA

1.25ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6552572356

Certificate GIA 6552572356

Diamond specifications and retailer prices

From $4,017 AUD
As of November 6, 2026
Save $4,472 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,868 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552572356. Listed at 20 retailers as of November 4, 2026, with a 111% 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552572356
Dimensions6.81 × 6.85 × 4.27 mm
L/W Ratio1.01
Girdle conditionSlightly Thick to Slightly Thick
Key to symbols
Twinning Wisp, Feather, Needle
Top View
6.81 mm6.85 mm1.25 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552572356
Side View
Table 58.0%Crown 36°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 62.6%

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 6
Current: $5,286 AUD|Low: $3,823 AUD|High: $8,874 AUD|Avg: $5,144 AUD|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$4,017 AUD
Retailer 5$4,058 AUD
Retailer 7$4,170 AUD
Retailer 6$4,256 AUD
Retailer 2$4,758 AUD
Retailer 9$5,059 AUD
Retailer 10$5,283 AUD
Retailer 1$5,286 AUD
Retailer 3$5,807 AUD
Retailer 4$8,489 AUD

43 data points across 10 retailers

20 retailers$4,017 AUD to $8,489 AUD

A
Cheapest Retailer
-
$4,017 AUD
A
Retailer 2
-
$4,058 AUD
View
A
Retailer 3
-
$4,170 AUD
View
A
Retailer 4
-
$4,256 AUD
View
Final sale: no returns
A
Retailer 5
-
$4,289 AUD
View
Retailer 6
-
$4,612 AUD
View
Price last confirmed 50 days ago
Retailer 7
-
$4,612 AUD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$4,758 AUD
View
Retailer 9
-
$4,932 AUD
View
Price last confirmed 38 days ago
A
Retailer 10
-
$5,059 AUD
View
B+
Retailer 11
-
$5,283 AUD
View
B+
Retailer 12
-
$5,283 AUD
View
B+
Retailer 13
-
$5,286 AUD
View
Retailer 14
-
$5,321 AUD
View
Price last confirmed 48 days ago
Retailer 15
-
$5,321 AUD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$5,458 AUD
View
B+
Retailer 17
-
$5,807 AUD
View
B
Retailer 18
-
$8,489 AUD
View
Retailer 19
-
$8,868 AUD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
cb690922-249a-4408-bb91-5a1185c9570f · Sep 28
$8,868 AUD
$6,093 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from $4,017 AUDSave up to $4,472 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
$4,017 AUD