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Radiant|Natural|GIA

1.26ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 11

Certificate GIA 11

Diamond specifications and retailer prices

From $4,480 AUD
As of November 4, 2026
Save $1,163 AUD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $5,643 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.26ct natural radiant diamond

This 1.26ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of November 4, 2026, with prices from $4,480 to $5,643, a $1,163 spread on the same certified stone. Blue Nile lists it at $5,643. 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

1.26
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 11
Dimensions7.31 × 5.29 × 3.51 mm
L/W Ratio1.38
Top View
7.31 mm5.29 mm1.26 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 11
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.3%

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 4
Current: $5,643 AUD|Low: $4,480 AUD|High: $5,643 AUD|Avg: $4,727 AUD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 3$4,480 AUD
Retailer 2$4,516 AUD
Blue Nile$5,643 AUD

2 data points across 3 retailers

3 retailers$4,480 AUD to $5,643 AUD

A
Cheapest Retailer
-
$4,480 AUD
A
Retailer 2
-
$4,516 AUD
View
Most Expensive
B
Blue Nile
20395821 · Nov 5
$5,643 AUD
$3,877 USD
View
2 more retailers have this diamond
Prices start from $4,480 AUDSave up to $1,163 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
1.26ct Radiant
$4,480 AUD