Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 6204620321

Certificate GIA 6204620321

Diamond specifications and retailer prices

From $5,000 USD
As of October 29, 2026
Save $607 USD (11%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,299 USD at MOH London · As of October 29, 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 29, 2026, with a relatively tight 12% 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
Color
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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Price History

Last verified: Oct 29
Current: $8,299 USD|Low: $4,055 USD|High: $8,354 USD|Avg: $5,718 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 4$4,055 USD
Retailer 5$5,000 USD
Retailer 2$5,190 USD
Retailer 3$5,607 USD
MOH London$8,299 USD

37 data points across 5 retailers

8 retailers$5,000 USD to $5,607 USD

Retailer 1
-
$4,055 USD
Price last confirmed 9 days ago
C
Retailer 2
-
$5,000 USD
View
B
Retailer 3
-
$5,190 USD
£4,087 GBP
View
C
Retailer 4
-
$5,320 USD
View
C
Retailer 5
-
$5,320 USD
View
C
Retailer 6
-
$5,500 USD
View
B
Retailer 7
-
$5,607 USD
€5,340 EUR
View
Most Expensive
MOH London
CFF297CD8 · Oct 29
$8,299 USD
£6,535 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $5,000 USDSave up to $607 USD

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
$5,000 USD