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Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1559331104

Certificate GIA 1559331104

Diamond specifications and retailer prices

From €2,057 EUR
$2,307 USD
As of November 2, 2026
Save €1,281 EUR (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,338 EUR at Yorxs · As of November 1, 2026
View at Yorxs

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 top-tier cut grade and certified by GIA 1559331104. Listed at 12 retailers as of November 1, 2026, with prices from €2,057 to €3,338, a €1,281 spread on the same certified stone. Yorxs lists it at €3,338. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1559331104
Dimensions6.77 × 6.80 × 4.26 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.77 mm6.80 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559331104
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 2
Current: €2,061 EUR|Low: €1,565 EUR|High: €3,338 EUR|Avg: €2,031 EUR|-5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
November 1, 2026
Retailer 12€1,565 EUR
Retailer 3€1,591 EUR
Retailer 11€1,605 EUR
Retailer 9€1,691 EUR
Retailer 10€1,704 EUR
Retailer 8€1,713 EUR
Retailer 5€1,883 EUR
Retailer 7€2,042 EUR
Retailer 4€2,054 EUR
Retailer 1€2,061 EUR
Retailer 2€2,625 EUR
Retailer 6€2,819 EUR
Yorxs€3,338 EUR

34 data points across 13 retailers

12 retailers€2,057 EUR to €3,338 EUR

Retailer 1
-
€1,565 EUR
SGD 2,372 SGD
Price last confirmed 11 days ago
Retailer 2
-
€1,591 EUR
$1,785 USD
View
Price last confirmed 13 days ago
Retailer 3
-
€1,605 EUR
$1,801 USD
View
Price last confirmed 16 days ago
Retailer 4
-
€1,691 EUR
£1,494 GBP
View
Price last confirmed 13 days ago
Retailer 5
-
€1,704 EUR
$1,911 USD
View
Price last confirmed 14 days ago
Retailer 6
-
€1,713 EUR
SGD 2,597 SGD
View
Price last confirmed 13 days ago
Retailer 7
-
€1,883 EUR
$2,112 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
€2,057 EUR
$2,307 USD
View
Retailer 9
-
€2,061 EUR
£1,820 GBP
View
Price last confirmed 13 days ago
Retailer 10
-
€2,625 EUR
$2,944 USD
View
Price last confirmed 14 days ago
Retailer 11
-
€2,819 EUR
$3,162 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Yorxs
E25410B · Nov 1
€3,338 EUR
View
11 more retailers have this diamond
Prices start from €2,057 EURSave up to €1,281 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
€2,057 EUR