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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 $2,438 AUD
As of November 1, 2026
Save $3,877 AUD (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,315 AUD 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 $2,438 to $6,315, a $3,877 spread on the same certified stone. NZ Jewellers lists it at $6,315. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $6,315 AUD|Low: $2,014 AUD|High: $6,725 AUD|Avg: $3,230 AUD|-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$2,014 AUD
Retailer 7$2,438 AUD
Retailer 6$2,516 AUD
Retailer 5$2,736 AUD
Retailer 14$2,762 AUD
Retailer 4$2,831 AUD
Retailer 13$2,857 AUD
Retailer 15$2,863 AUD
Retailer 2$2,957 AUD
Retailer 16$3,024 AUD
Retailer 3$3,158 AUD
Retailer 10$3,350 AUD
Retailer 11$3,721 AUD
Retailer 9$4,045 AUD
Retailer 12$5,328 AUD
NZ Jewellers$6,315 AUD

30 data points across 16 retailers

15 retailers$2,438 AUD to $6,315 AUD

B+
Cheapest Retailer
-
$2,438 AUD
B+
Retailer 2
-
$2,516 AUD
View
B+
Retailer 3
-
$2,736 AUD
View
Retailer 4
-
$2,762 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,831 AUD
View
B+
Retailer 6
-
$2,857 AUD
View
B+
Retailer 7
-
$2,863 AUD
View
B+
Retailer 8
-
$2,957 AUD
View
B+
Retailer 9
-
$3,024 AUD
View
B+
Retailer 10
-
$3,158 AUD
View
B
Retailer 11
-
$3,350 AUD
View
B
Retailer 12
-
$3,721 AUD
View
B
Retailer 13
-
$4,045 AUD
View
C
Retailer 14
-
$5,328 AUD
View
Most Expensive
C
NZ Jewellers
516db6b8-8eac-4ab3-ba15-a0d0fc2de4e0 · Nov 5
$6,315 AUD
$4,339 USD
View
14 more retailers have this diamond
Prices start from $2,438 AUDSave up to $3,877 AUD

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
$2,438 AUD