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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 6542139244

Certificate GIA 6542139244

Diamond specifications and retailer prices

From $3,132 AUD
As of November 6, 2026
Save $3,880 AUD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,791 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct 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 6542139244. Listed at 16 retailers as of November 4, 2026, with a 124% 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

1.21
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542139244
Dimensions6.43 × 7.26 × 4.15 mm
L/W Ratio1.13
Top View
6.43 mm7.26 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542139244
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.2%

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 6
Current: $3,132 AUD|Low: $2,940 AUD|High: $7,238 AUD|Avg: $4,295 AUD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 1$3,132 AUD
Retailer 3$3,333 AUD
Retailer 9$3,719 AUD
Retailer 4$3,767 AUD
Retailer 13$4,030 AUD
Retailer 11$4,112 AUD
Retailer 12$4,411 AUD
Retailer 6$4,451 AUD
Retailer 10$4,496 AUD
Retailer 5$4,573 AUD
Retailer 2$4,803 AUD
Retailer 7$5,132 AUD
Retailer 8$7,012 AUD

39 data points across 13 retailers

16 retailers$3,132 AUD to $7,012 AUD

A
Cheapest Retailer
-
$3,132 AUD
A
Retailer 2
-
$3,333 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,719 AUD
View
B+
Retailer 4
-
$3,767 AUD
View
B+
Retailer 5
-
$4,030 AUD
View
B+
Retailer 6
-
$4,112 AUD
View
Retailer 7
-
$4,205 AUD
View
Price last confirmed 43 days ago
B+
Retailer 8
-
$4,411 AUD
View
B+
Retailer 9
-
$4,451 AUD
View
B+
Retailer 10
-
$4,496 AUD
View
Retailer 11
-
$4,573 AUD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$4,803 AUD
View
Retailer 13
-
$4,851 AUD
View
Price last confirmed 44 days ago
B+
Retailer 14
-
$5,132 AUD
View
B
Retailer 15
-
$7,012 AUD
View
Most Expensive
NZ Jewellers
c27b58b6-618b-44f8-bf85-af67dd7fc74f · Sep 25
$8,791 AUD
$6,040 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from $3,132 AUDSave up to $3,880 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
1.21ct Heart
$3,132 AUD