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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 1223

Certificate GIA 1223

Diamond specifications and retailer prices

From $1,818 CAD
As of November 4, 2026
Save $2,965 CAD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,783 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct 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. Listed at 16 retailers as of November 4, 2026, with prices from $1,818 to $4,783, a $2,965 spread on the same certified stone. NZ Jewellers lists it at $4,783. 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

1.00
Carat
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1223
Dimensions6.44 × 6.48 × 3.92 mm
L/W Ratio1.01
Top View
6.44 mm6.48 mm1.00 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1223
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.8%

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: Nov 4
Current: $4,783 CAD|Low: $1,818 CAD|High: $5,052 CAD|Avg: $2,605 CAD|-5.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 8$1,818 CAD
Retailer 2$1,850 CAD
Retailer 11$1,961 CAD
Retailer 4$2,017 CAD
Retailer 12$2,052 CAD
Retailer 3$2,098 CAD
Retailer 10$2,149 CAD
Retailer 13$2,262 CAD
Retailer 7$2,532 CAD
Retailer 14$2,656 CAD
Retailer 6$2,730 CAD
Retailer 5$3,167 CAD
Retailer 9$3,582 CAD
NZ Jewellers$4,783 CAD

32 data points across 14 retailers

16 retailers$1,818 CAD to $4,783 CAD

A
Cheapest Retailer
-
$1,818 CAD
A
Retailer 2
-
$1,850 CAD
View
A
Retailer 3
-
$1,961 CAD
View
Retailer 4
-
$2,017 CAD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,052 CAD
View
A
Retailer 6
-
$2,098 CAD
View
A
Retailer 7
-
$2,105 CAD
View
A
Retailer 8
-
$2,149 CAD
View
A
Retailer 9
-
$2,262 CAD
View
A
Retailer 10
-
$2,532 CAD
View
A
Retailer 11
-
$2,605 CAD
View
Retailer 12
-
$2,656 CAD
View
Price last confirmed 16 days ago
Retailer 13
-
$2,730 CAD
View
Price last confirmed 33 days ago
Retailer 14
-
$3,167 CAD
View
Price last confirmed 15 days ago
B+
Retailer 15
-
$3,582 CAD
View
Most Expensive
B+
NZ Jewellers
688d6296-1ba7-4585-9024-79ef1b351d01 · Nov 5
$4,783 CAD
$3,425 USD
View
15 more retailers have this diamond
Prices start from $1,818 CADSave up to $2,965 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
1.00ct Round
$1,818 CAD