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Heart|Natural|GIA

1.23ct H VS1 Heart Natural Diamond

VG • H/VS1 • GIA 6545410219

Certificate GIA 6545410219

Diamond specifications and retailer prices

From $3,451 AUD
As of November 5, 2026
Save $4,835 AUD (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,500 AUD at NZ Jewellers · As of September 28, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545410219. Listed at 18 retailers as of November 5, 2026, with a 140% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
VS1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle41.5°
OriginNatural
Grading LabGIA
CertificateGIA 6545410219
Dimensions7.54 × 6.46 × 4.39 mm
L/W Ratio1.17
Top View
7.54 mm6.46 mm1.23 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545410219
Side View
Table 59.0%Crown 36.1°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 58.3%

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: Nov 5
Current: $8,287 AUD|Low: $3,433 AUD|High: $8,500 AUD|Avg: $5,332 AUD|-2.5%
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
Retailer 15
November 6, 2026
Retailer 9$3,451 AUD
Retailer 14$4,223 AUD
Retailer 6$4,393 AUD
Retailer 12$4,600 AUD
Retailer 5$4,757 AUD
Retailer 13$4,757 AUD
Retailer 2$4,921 AUD
Retailer 11$4,940 AUD
Retailer 3$4,961 AUD
Retailer 4$5,100 AUD
Retailer 7$5,230 AUD
Retailer 15$5,488 AUD
Retailer 8$5,805 AUD
Retailer 10$7,932 AUD
NZ Jewellers$8,287 AUD

46 data points across 15 retailers

18 retailers$3,451 AUD to $8,287 AUD

A
Cheapest Retailer
-
$3,451 AUD
B+
Retailer 2
-
$4,223 AUD
View
B+
Retailer 3
-
$4,393 AUD
View
B+
Retailer 4
-
$4,600 AUD
View
B+
Retailer 5
-
$4,757 AUD
View
Retailer 6
-
$4,757 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$4,878 AUD
View
Price last confirmed 39 days ago
B+
Retailer 8
-
$4,921 AUD
View
B+
Retailer 9
-
$4,940 AUD
View
B
Retailer 10
-
$4,961 AUD
View
B
Retailer 11
-
$5,100 AUD
View
Retailer 12
-
$5,230 AUD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$5,488 AUD
View
Retailer 14
-
$5,628 AUD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$5,805 AUD
View
B
Retailer 16
-
$7,932 AUD
View
B
Retailer 17
-
$8,287 AUD
View
Most Expensive
NZ Jewellers
8e6b5a0e-da46-43c9-bbe3-b5fcf1d663eb · Sep 28
$8,500 AUD
$5,950 USD
View
Price last confirmed 38 days ago
17 more retailers have this diamond
Prices start from $3,451 AUDSave up to $4,835 AUD

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 Heart
$3,451 AUD