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Round|Natural|IGI

1.23ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 837656136

Certificate IGI 837656136

Diamond specifications and retailer prices

From $2,644 AUD
As of November 6, 2026
Save $4,164 AUD (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,808 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 837656136. Listed at 12 retailers as of November 5, 2026, with prices from $2,644 to $6,808, a $4,164 spread on the same certified stone. NZ Jewellers lists it at $6,808. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 837656136
Dimensions6.80 × 6.85 × 4.28 mm
L/W Ratio1.01
Top View
6.80 mm6.85 mm1.23 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 837656136
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCuletDepth 62.6%

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 6
Current: $6,808 AUD|Low: $2,644 AUD|High: $6,808 AUD|Avg: $3,715 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$2,644 AUD
Retailer 3$2,976 AUD
Retailer 5$3,030 AUD
Retailer 9$3,256 AUD
Retailer 10$3,267 AUD
Retailer 12$3,407 AUD
Retailer 6$3,458 AUD
Retailer 4$3,758 AUD
Retailer 8$3,973 AUD
Retailer 7$4,135 AUD
Retailer 11$5,689 AUD
NZ Jewellers$6,808 AUD

7 data points across 12 retailers

12 retailers$2,644 AUD to $6,808 AUD

A
Cheapest Retailer
-
$2,644 AUD
A
Retailer 2
-
$2,976 AUD
View
A
Retailer 3
-
$3,030 AUD
View
A
Retailer 4
-
$3,256 AUD
View
A
Retailer 5
-
$3,267 AUD
View
B+
Retailer 6
-
$3,407 AUD
View
B+
Retailer 7
-
$3,458 AUD
View
B+
Retailer 8
-
$3,758 AUD
View
B+
Retailer 9
-
$3,973 AUD
View
B+
Retailer 10
-
$4,135 AUD
View
B
Retailer 11
-
$5,689 AUD
View
Most Expensive
B
NZ Jewellers
5af47527-02cb-4401-b143-5886d9ae5b64 · Nov 5
$6,808 AUD
$4,678 USD
View
11 more retailers have this diamond
Prices start from $2,644 AUDSave up to $4,164 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.

A
1.23ct Round
$2,644 AUD