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Round|Natural|IGI

1.21ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 642405173

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405173

Diamond specifications and retailer prices

From $2,100 USD
As of November 4, 2026
Save $2,761 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,920 USD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 642405173. Listed at 18 retailers as of November 4, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
J
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 642405173
Dimensions6.80 × 6.86 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.80 mm6.86 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405173
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,861 USD|Low: $2,100 USD|High: $5,038 USD|Avg: $2,781 USD|-3.5%
NZ Jewellers
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
Retailer 15
November 6, 2026
Retailer 12$2,100 USD
Retailer 2$2,163 USD
Retailer 6$2,172 USD
Retailer 5$2,180 USD
Retailer 3$2,325 USD
Retailer 4$2,325 USD
Retailer 7$2,410 USD
Retailer 14$2,432 USD
Retailer 11$2,555 USD
Retailer 8$2,667 USD
Retailer 15$2,683 USD
Retailer 9$2,837 USD
Retailer 10$2,884 USD
Retailer 13$4,062 USD
NZ Jewellers$4,861 USD

24 data points across 15 retailers

18 retailers$2,100 USD to $4,861 USD

A
Cheapest Retailer
-
$2,100 USD
A
Retailer 2
-
$2,163 USD
View
A
Retailer 3
-
$2,180 USD
View
Retailer 4
-
$2,292 USD
View
Price last confirmed 102 days ago
A
Retailer 5
-
$2,325 USD
View
A
Retailer 6
-
$2,325 USD
View
Retailer 7
-
$2,353 USD
View
Price last confirmed 15 days ago
Retailer 8
-
$2,410 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$2,432 USD
View
A
Retailer 10
-
$2,555 USD
View
B+
Retailer 11
-
$2,667 USD
View
B+
Retailer 12
-
$2,683 USD
View
Retailer 13
-
$2,781 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$2,837 USD
View
B+
Retailer 15
-
$2,884 USD
View
B
Retailer 16
-
$4,062 USD
View
B
Retailer 17
-
$4,861 USD
View
Most Expensive
NZ Jewellers
d7fcadd0-0be9-40fd-a6c5-aa36aa4a8791 · Sep 21
$4,920 USD
View
Price last confirmed 45 days ago
17 more retailers have this diamond
Prices start from $2,100 USDSave up to $2,761 USD

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.

A
1.21ct Round
$2,100 USD