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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6531598937

Certificate GIA 6531598937

Diamond specifications and retailer prices

From $3,938 AUD
As of November 6, 2026
Save $1,126 AUD (22%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,065 AUD at Jared · As of November 6, 2026
View at Jared

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531598937. Listed at 10 retailers as of November 6, 2026, with prices from $3,938 to $5,065, a $1,126 spread on the same certified stone. Jared lists it at $5,065. 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

1.21
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6531598937
Dimensions6.54 × 7.41 × 4.38 mm
L/W Ratio1.13
Top View
6.54 mm7.41 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531598937
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.1%

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: $5,065 AUD|Low: $3,785 AUD|High: $5,763 AUD|Avg: $4,860 AUD|-9.1%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4$3,938 AUD
Retailer 5$4,266 AUD
Retailer 10$4,414 AUD
Retailer 9$4,491 AUD
Retailer 2$4,561 AUD
Retailer 6$4,650 AUD
Retailer 3$4,905 AUD
Retailer 7$4,905 AUD
Retailer 8$4,963 AUD
Jared$5,065 AUD

42 data points across 10 retailers

10 retailers$3,938 AUD to $5,065 AUD

A
Cheapest Retailer
-
$3,938 AUD
Final sale: no returns
B+
Retailer 2
-
$4,266 AUD
View
B+
Retailer 3
-
$4,414 AUD
View
B+
Retailer 4
-
$4,491 AUD
View
B+
Retailer 5
-
$4,561 AUD
View
B+
Retailer 6
-
$4,650 AUD
View
B+
Retailer 7
-
$4,905 AUD
View
B+
Retailer 8
-
$4,905 AUD
View
B+
Retailer 9
-
$4,963 AUD
View
Most Expensive
B+
Jared
156794183 · Nov 6
$5,065 AUD
$3,480 USD
View
9 more retailers have this diamond
Prices start from $3,938 AUDSave up to $1,126 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
$3,938 AUD