Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1559989727

Certificate GIA 1559989727

Diamond specifications and retailer prices

From $5,242 CAD
$3,745 USD
As of October 29, 2026
Save $4,785 CAD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,027 CAD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559989727. Listed at 10 retailers as of October 27, 2026, with prices from $5,242 to $10,027, a $4,785 spread on the same certified stone. NZ Jewellers lists it at $10,027. 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

1.09
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559989727
Dimensions6.51 × 6.54 × 4.08 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.51 mm6.54 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559989727
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $10,027 CAD|Low: $5,242 CAD|High: $10,027 CAD|Avg: $6,982 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 7$5,242 CAD
Retailer 9$5,479 CAD
Retailer 3$5,570 CAD
Retailer 5$5,755 CAD
Retailer 8$5,755 CAD
Retailer 6$5,955 CAD
Retailer 10$6,171 CAD
Retailer 2$6,490 CAD
Retailer 4$9,677 CAD
NZ Jewellers$10,027 CAD

41 data points across 10 retailers

10 retailers$5,242 CAD to $10,027 CAD

B+
Cheapest Retailer
-
$5,242 CAD
$3,745 USD
B+
Retailer 2
-
$5,479 CAD
$3,915 USD
View
B+
Retailer 3
-
$5,570 CAD
£3,134 GBP
View
B+
Retailer 4
-
$5,755 CAD
$4,112 USD
View
B+
Retailer 5
-
$5,755 CAD
$4,112 USD
View
B+
Retailer 6
-
$5,955 CAD
$4,255 USD
View
B+
Retailer 7
-
$6,171 CAD
A$6,783 AUD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
$6,490 CAD
$4,637 USD
View
B
Retailer 9
-
$9,677 CAD
£5,444 GBP
View
Most Expensive
B
NZ Jewellers
7041e401-7015-401a-b08f-55c343acc911 · Oct 27
$10,027 CAD
$7,164 USD
View
9 more retailers have this diamond
Prices start from $5,242 CADSave up to $4,785 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.

B+
1.09ct Round
$5,242 CAD