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Princess|Natural|GIA

1.21ct J SI1 Princess Natural Diamond

VG • J/SI1 • GIA 1399137455

Certificate GIA 1399137455

Diamond specifications and retailer prices

From $3,704 AUD
As of November 4, 2026
Save $4,270 AUD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $7,974 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural princess diamond

This 1.21ct natural princess sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1399137455. Listed at 5 retailers as of November 4, 2026, with prices from $3,704 to $7,974, a $4,270 spread on the same certified stone. MOH London lists it at $7,974. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1399137455
Dimensions5.71 × 5.53 × 4.30 mm
L/W Ratio1.03
Culet sizeNone
Top View
5.71 mm5.53 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1399137455
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 77.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $7,974 AUD|Low: $4,717 AUD|High: $8,092 AUD|Avg: $5,857 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$4,717 AUD
Retailer 3$4,995 AUD
Retailer 2$5,567 AUD
MOH London$7,974 AUD

37 data points across 4 retailers

5 retailers$3,704 AUD to $7,974 AUD

B
Cheapest Retailer
-
$3,704 AUD
B
Retailer 2
-
$4,717 AUD
View
B
Retailer 3
-
$4,995 AUD
View
B
Retailer 4
-
$5,567 AUD
View
Most Expensive
C
MOH London
05E85850E · Nov 4
$7,974 AUD
£4,314 GBP
View
4 more retailers have this diamond
Prices start from $3,704 AUDSave up to $4,270 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 Princess
$3,704 AUD