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Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2136111141

Certificate GIA 2136111141

Diamond specifications and retailer prices

From $11,285 CAD
As of November 1, 2026
Save $4,396 CAD (28%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $20,908 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct 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 2136111141. Listed at 13 retailers as of November 1, 2026, with a 39% 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

1.23
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2136111141
Dimensions6.94 × 6.92 × 4.18 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.94 mm6.92 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2136111141
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $20,908 CAD|Low: $11,072 CAD|High: $20,908 CAD|Avg: $15,087 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$11,285 CAD
Retailer 4$11,861 CAD
Retailer 7$12,544 CAD
Retailer 2$13,625 CAD
Retailer 8$13,800 CAD
Retailer 3$15,111 CAD
Retailer 5$19,592 CAD
NZ Jewellers$20,908 CAD

40 data points across 8 retailers

13 retailers$11,285 CAD to $15,681 CAD

B
Cheapest Retailer
-
$11,285 CAD
B
Retailer 2
-
$11,861 CAD
View
B
Retailer 3
-
$12,544 CAD
View
Final sale: no returns
B
Retailer 4
-
$13,590 CAD
View
B
Retailer 5
-
$13,625 CAD
View
B
Retailer 6
-
$13,800 CAD
View
B
Retailer 7
-
$14,930 CAD
View
B
Retailer 8
-
$14,930 CAD
View
B
Retailer 9
-
$15,111 CAD
View
B
Retailer 10
-
$15,418 CAD
View
B
Retailer 11
-
$15,681 CAD
View
Retailer 12
-
$19,592 CAD
View
Price under review
Most Expensive
NZ Jewellers
d468309c-1b94-4227-b591-484861551621 · Nov 5
$20,908 CAD
$14,971 USD
View
Price under review
12 more retailers have this diamond
Prices start from $11,285 CADSave up to $4,396 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
1.23ct Round
$11,285 CAD