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Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 6204620321

Certificate GIA 6204620321

Diamond specifications and retailer prices

From $7,118 AUD
$5,000 USD
As of October 31, 2026
Save $809 AUD (10%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,752 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6204620321. Listed at 8 retailers as of October 31, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryVery Good
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6204620321
Dimensions6.91 × 6.87 × 4.21 mm
L/W Ratio1.01
Top View
6.91 mm6.87 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateGIA 6204620321
Side View
Table 57.0%Crown 33.5°Girdle: VTN-MEDPavilion 41.2°Culet: NoneDepth 61.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $11,752 AUD|Low: $5,773 AUD|High: $11,893 AUD|Avg: $8,140 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4$5,773 AUD
Retailer 5$7,118 AUD
Retailer 3$7,389 AUD
Retailer 2$7,927 AUD
MOH London$11,752 AUD

38 data points across 5 retailers

8 retailers$7,118 AUD to $7,927 AUD

Retailer 1
-
$5,773 AUD
$4,055 USD
Price last confirmed 10 days ago
C
Retailer 2
-
$7,118 AUD
$5,000 USD
View
B
Retailer 3
-
$7,389 AUD
£4,087 GBP
View
C
Retailer 4
-
$7,574 AUD
$5,320 USD
View
C
Retailer 5
-
$7,574 AUD
$5,320 USD
View
C
Retailer 6
-
$7,830 AUD
$5,500 USD
View
B
Retailer 7
-
$7,927 AUD
€5,303 EUR
View
Most Expensive
MOH London
CFF297CD8 · Nov 1
$11,752 AUD
£6,500 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $7,118 AUDSave up to $809 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 Round
$7,118 AUD