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Heart|Natural|GIA

1.23ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 6421591328

Certificate GIA 6421591328

Diamond specifications and retailer prices

From $5,491 CAD
As of November 4, 2026
Save $6,524 CAD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,015 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6421591328. Listed at 13 retailers as of November 4, 2026, with prices from $5,491 to $12,015, a $6,524 spread on the same certified stone. NZ Jewellers lists it at $12,015. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421591328
Dimensions7.28 × 6.27 × 3.74 mm
L/W Ratio1.16
Top View
7.28 mm6.27 mm1.23 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421591328
Side View
Table 59.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 59.6%

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 4
Current: $12,015 CAD|Low: $4,992 CAD|High: $12,015 CAD|Avg: $7,858 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$5,491 CAD
Retailer 2$6,852 CAD
Retailer 9$6,897 CAD
Retailer 10$6,897 CAD
Retailer 11$6,897 CAD
Retailer 6$6,899 CAD
Retailer 7$6,951 CAD
Retailer 3$7,957 CAD
Retailer 4$8,414 CAD
Retailer 5$10,690 CAD
NZ Jewellers$12,015 CAD

44 data points across 11 retailers

13 retailers$5,491 CAD to $12,015 CAD

B
Cheapest Retailer
-
$5,491 CAD
Final sale: no returns
B
Retailer 2
-
$6,852 CAD
View
Retailer 3
-
$6,897 CAD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$6,897 CAD
View
B
Retailer 5
-
$6,897 CAD
View
B
Retailer 6
-
$6,899 CAD
View
Retailer 7
-
$6,951 CAD
View
Price last confirmed 28 days ago
B
Retailer 8
-
$6,991 CAD
View
B
Retailer 9
-
$7,109 CAD
View
B
Retailer 10
-
$7,957 CAD
View
B
Retailer 11
-
$8,414 CAD
View
B
Retailer 12
-
$10,690 CAD
View
Most Expensive
B
NZ Jewellers
8df258f0-f6e5-44b8-aada-89b0f87417ad · Nov 5
$12,015 CAD
$8,542 USD
View
12 more retailers have this diamond
Prices start from $5,491 CADSave up to $6,524 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 Heart
$5,491 CAD