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Round|Natural|GIA

1.23ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6552654575

Certificate GIA 6552654575

Diamond specifications and retailer prices

From $4,093 CAD
A$4,507 AUD
As of October 30, 2026
Save $1,654 CAD (29%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,746 CAD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552654575. Listed at 5 retailers as of October 30, 2026, with prices from $4,093 to $5,746, a $1,654 spread on the same certified stone. 77 Diamonds lists it at $5,746. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552654575
Dimensions6.83 × 4.26 × 4.26 mm
L/W Ratio1.60
Culet sizeNone
Top View
6.83 mm4.26 mm1.23 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552654575
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: $5,746 CAD|Low: $3,226 CAD|High: $5,775 CAD|Avg: $4,383 CAD|+57.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$3,226 CAD
Retailer 7$3,308 CAD
Retailer 11$3,536 CAD
Retailer 9$3,837 CAD
Retailer 6$4,421 CAD
Retailer 5$4,444 CAD
Retailer 3$4,456 CAD
Retailer 4$4,540 CAD
Retailer 2$5,403 CAD
Retailer 10$5,724 CAD
77 Diamonds$5,746 CAD

21 data points across 11 retailers

5 retailers$4,093 CAD to $5,746 CAD

A
Cheapest Retailer
-
$4,093 CAD
A$4,507 AUD
B+
Retailer 2
-
$4,221 CAD
$3,022 USD
View
B+
Retailer 3
-
$4,540 CAD
View
B
Retailer 4
-
$5,403 CAD
€3,684 EUR
View
Most Expensive
B+
77 Diamonds
RBMBTRUSYXQS · Oct 30
$5,746 CAD
£3,239 GBP
View
4 more retailers have this diamond
Prices start from $4,093 CADSave up to $1,654 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
1.23ct Round
$4,093 CAD