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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 €2,065 EUR
$2,307 USD
As of October 31, 2026
Save €1,287 EUR (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,351 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 October 31, 2026, with prices from €2,065 to €3,351, a €1,287 spread on the same certified stone. Yorxs lists it at €3,351. 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
Color
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: Oct 31
Current: €2,069 EUR|Low: €1,571 EUR|High: €3,351 EUR|Avg: €2,039 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€1,571 EUR
Retailer 3€1,598 EUR
Retailer 11€1,612 EUR
Retailer 9€1,698 EUR
Retailer 10€1,711 EUR
Retailer 8€1,720 EUR
Retailer 5€1,890 EUR
Retailer 7€2,050 EUR
Retailer 4€2,062 EUR
Retailer 1€2,069 EUR
Retailer 2€2,635 EUR
Retailer 6€2,830 EUR
Yorxs€3,351 EUR

34 data points across 13 retailers

12 retailers€2,065 EUR to €3,351 EUR

Retailer 1
-
€1,571 EUR
SGD 2,372 SGD
Price last confirmed 10 days ago
Retailer 2
-
€1,598 EUR
$1,785 USD
View
Price last confirmed 12 days ago
Retailer 3
-
€1,612 EUR
$1,801 USD
View
Price last confirmed 15 days ago
Retailer 4
-
€1,698 EUR
£1,494 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
€1,711 EUR
$1,911 USD
View
Price last confirmed 13 days ago
Retailer 6
-
€1,720 EUR
SGD 2,597 SGD
View
Price last confirmed 12 days ago
Retailer 7
-
€1,890 EUR
$2,112 USD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
€2,065 EUR
$2,307 USD
View
Retailer 9
-
€2,069 EUR
£1,820 GBP
View
Price last confirmed 12 days ago
Retailer 10
-
€2,635 EUR
$2,944 USD
View
Price last confirmed 13 days ago
Retailer 11
-
€2,830 EUR
$3,162 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Yorxs
E25410B · Nov 1
€3,351 EUR
View
11 more retailers have this diamond
Prices start from €2,065 EURSave up to €1,287 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
€2,065 EUR