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Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1568139211

Certificate GIA 1568139211

Diamond specifications and retailer prices

From $4,079 NZD
As of November 7, 2026
Save $4,606 NZD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,685 NZD at MOH London · As of November 7, 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 top-tier cut grade and certified by GIA 1568139211. Listed at 16 retailers as of November 7, 2026, with prices from $4,079 to $8,685, a $4,606 spread on the same certified stone. MOH London lists it at $8,685. 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1568139211
Dimensions6.79 × 6.75 × 4.25 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
6.79 mm6.75 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568139211
Side View
Table 58.0%Crown 35°Girdle: Slightly ThickPavilion 41.4°Culet: NDepth 62.8%

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 7
Current: $8,685 NZD|Low: $3,460 NZD|High: $8,708 NZD|Avg: $4,682 NZD|+21.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 3$3,824 NZD
Retailer 11$4,079 NZD
Retailer 4$4,095 NZD
Retailer 10$4,355 NZD
Retailer 2$4,683 NZD
Retailer 5$4,800 NZD
Retailer 8$5,177 NZD
Retailer 12$5,177 NZD
Retailer 6$5,244 NZD
Retailer 9$5,358 NZD
Retailer 7$5,798 NZD
MOH London$8,685 NZD

34 data points across 12 retailers

16 retailers$4,079 NZD to $8,685 NZD

Retailer 1
-
$3,824 NZD
Price last confirmed 15 days ago
Retailer 2
-
$4,073 NZD
View
Price last confirmed 35 days ago
B+
Retailer 3
-
$4,079 NZD
View
Retailer 4
-
$4,095 NZD
View
Price last confirmed 19 days ago
Retailer 5
-
$4,181 NZD
View
Price last confirmed 39 days ago
B+
Retailer 6
-
$4,355 NZD
View
B+
Retailer 7
-
$4,683 NZD
View
Retailer 8
-
$4,701 NZD
View
Price last confirmed 34 days ago
B
Retailer 9
-
$4,800 NZD
View
B
Retailer 10
-
$5,177 NZD
View
B
Retailer 11
-
$5,177 NZD
View
B
Retailer 12
-
$5,244 NZD
View
B
Retailer 13
-
$5,358 NZD
View
B
Retailer 14
-
$5,798 NZD
View
Retailer 15
-
$8,516 NZD
View
Price last confirmed 35 days ago
Most Expensive
C
MOH London
5F7C908C1 · Nov 7
$8,685 NZD
£3,791 GBP
View
15 more retailers have this diamond
Prices start from $4,079 NZDSave up to $4,606 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
$4,079 NZD