CaratHunter
Plans
Round|Natural|GIA

1.25ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6505129193

Certificate GIA 6505129193

Diamond specifications and retailer prices

From $4,525 AUD
As of November 6, 2026
Save $1,435 AUD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,960 AUD at Yorxs · As of November 5, 2026
View at Yorxs

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 6505129193. Listed at 2 retailers as of November 5, 2026, with prices from $4,525 to $5,960, a $1,435 spread on the same certified stone. Yorxs lists it at $5,960. 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 angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6505129193
Dimensions6.86 × 6.82 × 4.28 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Cert comments
Additional twinning wisps, additional clouds and surface graining are not shown.
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Needle
Top View
6.86 mm6.82 mm1.25 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505129193
Side View
Table 57.0%Crown 36°Girdle: ThickPavilion 40.6°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: $5,838 AUD|Low: $3,930 AUD|High: $6,255 AUD|Avg: $5,575 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 5, 2026
Retailer 3$3,930 AUD
Retailer 1$5,838 AUD
Retailer 4$5,918 AUD
Yorxs$5,960 AUD
Retailer 2$6,255 AUD

16 data points across 5 retailers

2 retailers$4,525 AUD to $5,960 AUD

A
Cheapest Retailer
-
$4,525 AUD
Most Expensive
B+
Yorxs
HPD8113/ADUD · Nov 5
$5,960 AUD
€3,900 EUR
View
1 more retailer has this diamond
Prices start from $4,525 AUDSave up to $1,435 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
$4,525 AUD