Oval|Natural|IGI

1.21ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 823631655

Shape and cutting style on the report: Oval brilliant

Certificate IGI 823631655

Diamond specifications and retailer prices

From $1,675 USD
As of November 1, 2026
Save $2,664 USD (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,339 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 823631655. Listed at 15 retailers as of November 1, 2026, with prices from $1,675 to $4,339, a $2,664 spread on the same certified stone. NZ Jewellers lists it at $4,339. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle36.5°
OriginNatural
Grading LabIGI
CertificateIGI 823631655
Dimensions8.50 × 5.95 × 3.64 mm
L/W Ratio1.43
Girdle conditionFaceted
Top View
8.50 mm5.95 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 823631655
Side View
Table 59.0%Crown 31.4°Girdle: STK-THKPavilion 36.5°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,339 USD|Low: $1,384 USD|High: $4,621 USD|Avg: $2,219 USD|-6.1%
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
Retailer 16
November 6, 2026
Retailer 8$1,384 USD
Retailer 7$1,675 USD
Retailer 6$1,729 USD
Retailer 5$1,880 USD
Retailer 14$1,898 USD
Retailer 4$1,945 USD
Retailer 13$1,963 USD
Retailer 15$1,967 USD
Retailer 2$2,032 USD
Retailer 16$2,078 USD
Retailer 3$2,170 USD
Retailer 10$2,302 USD
Retailer 11$2,557 USD
Retailer 9$2,779 USD
Retailer 12$3,661 USD
NZ Jewellers$4,339 USD

30 data points across 16 retailers

15 retailers$1,675 USD to $4,339 USD

B+
Cheapest Retailer
-
$1,675 USD
B+
Retailer 2
-
$1,729 USD
View
B+
Retailer 3
-
$1,880 USD
View
Retailer 4
-
$1,898 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$1,945 USD
View
B+
Retailer 6
-
$1,963 USD
View
B+
Retailer 7
-
$1,967 USD
View
B+
Retailer 8
-
$2,032 USD
View
B+
Retailer 9
-
$2,078 USD
View
B+
Retailer 10
-
$2,170 USD
View
B
Retailer 11
-
$2,302 USD
View
B
Retailer 12
-
$2,557 USD
View
B
Retailer 13
-
$2,779 USD
View
C
Retailer 14
-
$3,661 USD
View
Most Expensive
C
NZ Jewellers
516db6b8-8eac-4ab3-ba15-a0d0fc2de4e0 · Nov 5
$4,339 USD
View
14 more retailers have this diamond
Prices start from $1,675 USDSave up to $2,664 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.

B+
1.21ct Oval
$1,675 USD