CaratHunter
Plans
Round|Natural|GIA

1.29ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 4

Certificate GIA 4

Diamond specifications and retailer prices

From $4,395 AUD
As of November 4, 2026
Save $44 AUD (1%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $5,542 AUD at Blue Nile · As of October 24, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA. Listed at 3 retailers as of November 4, 2026, with a relatively tight 1% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.29
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 4
Dimensions6.83 × 6.89 × 4.31 mm
L/W Ratio1.01
Top View
6.83 mm6.89 mm1.29 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 4
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,542 AUD|Low: $4,395 AUD|High: $5,542 AUD|Avg: $4,642 AUD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 3$4,395 AUD
Retailer 2$4,439 AUD
Blue Nile$5,542 AUD

2 data points across 3 retailers

3 retailers$4,395 AUD to $4,439 AUD

B+
Cheapest Retailer
-
$4,395 AUD
B+
Retailer 2
-
$4,439 AUD
View
Most Expensive
Blue Nile
22035325 · Oct 24
$5,542 AUD
$3,808 USD
View
Price last confirmed 13 days ago
2 more retailers have this diamond
Prices start from $4,395 AUDSave up to $44 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.

B+
1.29ct Round
$4,395 AUD