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Round|Natural|GIA

1.28ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 7508739948

Certificate GIA 7508739948

Diamond specifications and retailer prices

From $3,218 CAD
$2,304 USD
As of October 30, 2026
Save $4,072 CAD (56%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,290 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 top-tier cut grade and certified by GIA 7508739948. Listed at 6 retailers as of October 30, 2026, with prices from $3,218 to $7,290, a $4,072 spread on the same certified stone. NZ Jewellers lists it at $7,290. 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

1.28
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7508739948
Dimensions6.90 × 6.93 × 4.34 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
6.90 mm6.93 mm1.28 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7508739948
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $7,290 CAD|Low: $2,534 CAD|High: $7,290 CAD|Avg: $4,648 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 5$3,218 CAD
Retailer 6$3,400 CAD
Retailer 4$4,089 CAD
Retailer 2$4,127 CAD
Retailer 3$6,142 CAD
NZ Jewellers$7,290 CAD

26 data points across 6 retailers

6 retailers$3,218 CAD to $7,290 CAD

A
Cheapest Retailer
-
$3,218 CAD
$2,304 USD
Final sale: no returns
A
Retailer 2
-
$3,400 CAD
$2,434 USD
View
B+
Retailer 3
-
$4,089 CAD
£2,305 GBP
View
B+
Retailer 4
-
$4,127 CAD
€2,814 EUR
View
B
Retailer 5
-
$6,142 CAD
£3,462 GBP
View
Most Expensive
B
NZ Jewellers
2331ba08-7192-4f4c-85cb-9842da7f89c2 · Oct 30
$7,290 CAD
$5,219 USD
View
5 more retailers have this diamond
Prices start from $3,218 CADSave up to $4,072 CAD

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
1.28ct Round
$3,218 CAD