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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 €4,475 EUR
$5,000 USD
As of October 31, 2026
Save €509 EUR (10%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €7,389 EUR 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
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €7,389 EUR|Low: €3,630 EUR|High: €7,478 EUR|Avg: €5,118 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4€3,630 EUR
Retailer 5€4,475 EUR
Retailer 3€4,646 EUR
Retailer 2€4,984 EUR
MOH London€7,389 EUR

38 data points across 5 retailers

8 retailers€4,475 EUR to €4,984 EUR

Retailer 1
-
€3,630 EUR
$4,055 USD
Price last confirmed 11 days ago
C
Retailer 2
-
€4,475 EUR
$5,000 USD
View
B
Retailer 3
-
€4,646 EUR
£4,087 GBP
View
C
Retailer 4
-
€4,762 EUR
$5,320 USD
View
C
Retailer 5
-
€4,762 EUR
$5,320 USD
View
C
Retailer 6
-
€4,923 EUR
$5,500 USD
View
B
Retailer 7
-
€4,984 EUR
View
Most Expensive
MOH London
CFF297CD8 · Nov 1
€7,389 EUR
£6,500 GBP
View
Price under review
7 more retailers have this diamond
Prices start from €4,475 EURSave up to €509 EUR

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
€4,475 EUR