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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1418156170

Certificate GIA 1418156170

Diamond specifications and retailer prices

From $4,215 AUD
As of November 6, 2026
Save $8,302 AUD (66%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $12,517 AUD at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded F 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 1418156170. Listed at 8 retailers as of November 6, 2026, with prices from $4,215 to $12,517, a $8,302 spread on the same certified stone. Yorxs lists it at $12,517. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1418156170
Dimensions7.26 × 7.37 × 4.00 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
7.26 mm7.37 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1418156170
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 54.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,699 AUD|Low: $4,215 AUD|High: $12,617 AUD|Avg: $8,443 AUD|-37.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 7, 2026
Retailer 4$4,215 AUD
Retailer 3$4,481 AUD
Retailer 6$4,532 AUD
Retailer 5$4,689 AUD
Retailer 7$5,705 AUD
Retailer 1$6,699 AUD
Retailer 2$7,197 AUD
Yorxs$12,517 AUD

45 data points across 8 retailers

8 retailers$4,215 AUD to $12,517 AUD

B+
Cheapest Retailer
-
$4,215 AUD
B+
Retailer 2
-
$4,481 AUD
View
B+
Retailer 3
-
$4,532 AUD
View
B+
Retailer 4
-
$4,689 AUD
View
Final sale: no returns
B
Retailer 5
-
$5,705 AUD
View
B
Retailer 6
-
$6,699 AUD
View
B
Retailer 7
-
$7,197 AUD
View
Most Expensive
B
Yorxs
217813255 · Nov 6
$12,517 AUD
€8,191 EUR
View
7 more retailers have this diamond
Prices start from $4,215 AUDSave up to $8,302 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.

B+
1.21ct Heart
$4,215 AUD