Round|Natural|GIA

1.29ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 4

Certificate GIA 4

Diamond specifications and retailer prices

From $3,020 USD
As of October 31, 2026
Save $30 USD (1%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,808 USD 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 October 30, 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
Color
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
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Price History

Last verified: Oct 31
Current: $3,808 USD|Low: $3,020 USD|High: $3,808 USD|Avg: $3,190 USD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 3$3,020 USD
Retailer 2$3,050 USD
Blue Nile$3,808 USD

2 data points across 3 retailers

3 retailers$3,020 USD to $3,050 USD

B+
Cheapest Retailer
-
$3,020 USD
B+
Retailer 2
-
$3,050 USD
View
Most Expensive
Blue Nile
22035325 · Oct 24
$3,808 USD
View
Price last confirmed 7 days ago
2 more retailers have this diamond
Prices start from $3,020 USDSave up to $30 USD

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
$3,020 USD