Round|Natural|GIA

1.30ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1558178921

Certificate GIA 1558178921

Diamond specifications and retailer prices

From $5,434 CAD
As of November 6, 2026
Save $6,341 CAD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,368 CAD at NZ Jewellers · As of September 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558178921. Listed at 15 retailers as of November 2, 2026, with a 117% 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558178921
Dimensions6.89 × 6.94 × 4.37 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
6.89 mm6.94 mm1.30 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558178921
Side View
Table 55.0%CrownGirdle: THN-STKPavilion 40.6°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
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 6
Current: $6,188 CAD|Low: $5,434 CAD|High: $12,544 CAD|Avg: $7,538 CAD|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 4$5,434 CAD
Retailer 1$6,188 CAD
Retailer 5$6,469 CAD
Retailer 7$6,948 CAD
Retailer 6$6,963 CAD
Retailer 8$7,477 CAD
Retailer 2$8,172 CAD
Retailer 3$11,775 CAD

39 data points across 8 retailers

15 retailers$5,434 CAD to $11,775 CAD

A
Cheapest Retailer
-
$5,434 CAD
A
Retailer 2
-
$6,188 CAD
View
A
Retailer 3
-
$6,469 CAD
View
A
Retailer 4
-
$6,948 CAD
View
Final sale: no returns
Retailer 5
-
$6,963 CAD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$7,477 CAD
View
Retailer 7
-
$7,660 CAD
View
Price last confirmed 30 days ago
Retailer 8
-
$7,726 CAD
View
Price last confirmed 39 days ago
Retailer 9
-
$7,726 CAD
View
Price last confirmed 38 days ago
Retailer 10
-
$7,860 CAD
View
Price last confirmed 59 days ago
B+
Retailer 11
-
$8,172 CAD
View
B
Retailer 12
-
$11,775 CAD
View
Retailer 13
-
$12,811 CAD
View
Price last confirmed 31 days ago
Retailer 14
-
$13,034 CAD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
ad511fe0-2f1f-423f-be00-3f64ba4482f6 · Sep 1
$13,368 CAD
$9,572 USD
View
Price last confirmed 65 days ago
14 more retailers have this diamond
Prices start from $5,434 CADSave up to $6,341 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
$5,434 CAD