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Round|Natural|GIA

1.28ct J SI2 Round Natural Diamond

GD • J/SI2 • GIA 2233605885

Certificate GIA 2233605885

Diamond specifications and retailer prices

From $3,981 AUD
€2,663 EUR
As of October 30, 2026
Save $69 AUD (2%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,050 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.28ct natural round diamond

This 1.28ct 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 standard cut grade and certified by GIA 2233605885. Listed at 2 retailers as of October 30, 2026, with a relatively tight 2% 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

1.28
Carat
J
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2233605885
Dimensions7.24 × 7.30 × 4.07 mm
L/W Ratio1.01
Culet sizeVery Small
Top View
7.24 mm7.30 mm1.28 ctJ / SI2
OriginNatural
CutGood
PolishGood
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2233605885
Side View
Table 65.0%CrownGirdle: VTN-MEDPavilionCulet: Very SmallDepth 55.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $4,050 AUD|Low: $3,801 AUD|High: $4,110 AUD|Avg: $4,009 AUD|-0.2%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2$3,981 AUD
77 Diamonds$4,050 AUD

36 data points across 2 retailers

2 retailers$3,981 AUD to $4,050 AUD

B
Cheapest Retailer
-
$3,981 AUD
€2,663 EUR
Most Expensive
B
77 Diamonds
RBMBTVDEJJCM · Nov 1
$4,050 AUD
£2,240 GBP
View
1 more retailer has this diamond
Prices start from $3,981 AUDSave up to $69 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
1.28ct Round
$3,981 AUD