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Round|Natural|GIA

1.29ct F SI1 Round Natural Diamond

ID • F/SI1 • GIA 246

Certificate GIA 246

Diamond specifications and retailer prices

From $6,312 AUD
$4,424 USD
As of October 28, 2026
Save $1,351 AUD (18%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $7,662 AUD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 2 retailers as of October 28, 2026, with prices from $6,312 to $7,662, a $1,351 spread on the same certified stone. Blue Nile lists it at $7,662. 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

1.29
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 246
Dimensions6.90 × 6.95 × 4.35 mm
L/W Ratio1.01
Top View
6.90 mm6.95 mm1.29 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 246
Side View
Table 56.0%CrownGirdle: Medium to Slightly ThickPavilionCulet: NDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $7,662 AUD|Low: $6,312 AUD|High: $8,193 AUD|Avg: $7,212 AUD|-6.5%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2$6,312 AUD
Blue Nile$7,662 AUD

7 data points across 2 retailers

2 retailers$6,312 AUD to $7,662 AUD

A
Cheapest Retailer
-
$6,312 AUD
$4,424 USD
Most Expensive
B
Blue Nile
29883349 · Oct 29
$7,662 AUD
$5,370 USD
View
1 more retailer has this diamond
Prices start from $6,312 AUDSave up to $1,351 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
1.29ct Round
$6,312 AUD