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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 $4,162 NZD
As of November 6, 2026
Save $2,604 NZD (38%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,766 NZD at Yorxs · As of November 3, 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 14 retailers as of November 3, 2026, with prices from $4,162 to $6,766, a $2,604 spread on the same certified stone. Yorxs lists it at $6,766. 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 6
Current: $4,851 NZD|Low: $3,166 NZD|High: $6,766 NZD|Avg: $4,119 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Yorxs
November 3, 2026
Retailer 3$3,166 NZD
Retailer 5$3,220 NZD
Retailer 2$3,247 NZD
Retailer 13$3,422 NZD
Retailer 14$3,447 NZD
Retailer 12$3,465 NZD
Retailer 9$3,810 NZD
Retailer 11$4,131 NZD
Retailer 6$4,156 NZD
Retailer 8$4,169 NZD
Retailer 1$4,851 NZD
Retailer 7$5,049 NZD
Retailer 4$5,311 NZD
Retailer 10$5,704 NZD
Yorxs$6,766 NZD

32 data points across 15 retailers

14 retailers$4,162 NZD to $6,766 NZD

Retailer 1
-
$3,220 NZD
Price last confirmed 17 days ago
Retailer 2
-
$3,247 NZD
View
Price last confirmed 20 days ago
Retailer 3
-
$3,422 NZD
View
Price last confirmed 17 days ago
Retailer 4
-
$3,447 NZD
View
Price last confirmed 18 days ago
Retailer 5
-
$3,465 NZD
View
Price last confirmed 17 days ago
Retailer 6
-
$3,810 NZD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$4,162 NZD
View
Retailer 8
-
$4,169 NZD
View
Price last confirmed 17 days ago
B+
Retailer 9
-
$4,851 NZD
View
B
Retailer 10
-
$5,049 NZD
View
B
Retailer 11
-
$5,143 NZD
View
Retailer 12
-
$5,311 NZD
View
Price last confirmed 18 days ago
Retailer 13
-
$5,704 NZD
View
Price last confirmed 17 days ago
Most Expensive
B
Yorxs
E25410B · Nov 3
$6,766 NZD
€3,572 EUR
View
13 more retailers have this diamond
Prices start from $4,162 NZDSave up to $2,604 NZD

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
$4,162 NZD