Round|Natural|GIA

1.30ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2528810151

Certificate GIA 2528810151

Diamond specifications and retailer prices

From $3,736 CAD
As of November 4, 2026
Save $4,437 CAD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,537 CAD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct 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 2528810151. Listed at 18 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528810151
Dimensions6.97 × 7.00 × 4.31 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.97 mm7.00 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 2528810151
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,194 CAD|Low: $3,736 CAD|High: $8,378 CAD|Avg: $5,160 CAD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$3,736 CAD
Retailer 7$3,902 CAD
Retailer 8$4,353 CAD
Retailer 2$4,524 CAD
Retailer 6$4,686 CAD
Retailer 11$4,901 CAD
Retailer 4$5,040 CAD
Retailer 1$5,194 CAD
Retailer 3$5,303 CAD
Retailer 5$5,693 CAD
Retailer 9$8,173 CAD

30 data points across 11 retailers

18 retailers$3,736 CAD to $8,173 CAD

A
Cheapest Retailer
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$3,736 CAD
A
Retailer 2
-
$3,902 CAD
View
A
Retailer 3
-
$4,353 CAD
View
A
Retailer 4
-
$4,452 CAD
View
A
Retailer 5
-
$4,524 CAD
View
Final sale: no returns
A
Retailer 6
-
$4,582 CAD
View
A
Retailer 7
-
$4,588 CAD
View
A
Retailer 8
-
$4,686 CAD
View
Retailer 9
-
$4,901 CAD
View
Price last confirmed 17 days ago
Retailer 10
-
$4,901 CAD
View
Price last confirmed 21 days ago
A
Retailer 11
-
$5,040 CAD
View
Retailer 12
-
$5,089 CAD
View
Price last confirmed 22 days ago
A
Retailer 13
-
$5,194 CAD
View
Retailer 14
-
$5,303 CAD
View
Price last confirmed 29 days ago
Retailer 15
-
$5,655 CAD
View
Price last confirmed 19 days ago
A
Retailer 16
-
$5,693 CAD
View
B
Retailer 17
-
$8,173 CAD
View
Most Expensive
NZ Jewellers
850537c0-77a6-497c-ab10-3d486638b5d1 · Oct 17
$8,537 CAD
$6,113 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from $3,736 CADSave up to $4,437 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
1.30ct Round
$3,736 CAD