Round|Natural|IGI

1.23ct K I1 Round Natural Diamond

EX • K/I1 • IGI 341806037

Shape and cutting style on the report: Round brilliant

Certificate IGI 341806037

Diamond specifications and retailer prices

From $1,251 USD
As of November 4, 2026
Save $2,039 USD (62%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,290 USD 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 I1 clarity (included), with a top-tier cut grade and certified by IGI 341806037. Listed at 9 retailers as of November 4, 2026, with prices from $1,251 to $3,290, a $2,039 spread on the same certified stone. NZ Jewellers lists it at $3,290. 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
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 341806037
Dimensions6.97 × 7.00 × 4.14 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
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Top View
6.97 mm7.00 mm1.23 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 341806037
Side View
Table 61.5%Crown 32°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 59.3%

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 4
Current: $1,724 USD|Low: $1,251 USD|High: $1,745 USD|Avg: $1,504 USD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 4$1,251 USD
Retailer 2$1,434 USD
Retailer 3$1,605 USD
Retailer 1$1,724 USD

17 data points across 4 retailers

9 retailers$1,251 USD to $3,290 USD

B+
Cheapest Retailer
-
$1,251 USD
B+
Retailer 2
-
$1,349 USD
View
Retailer 3
-
$1,349 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$1,411 USD
View
B+
Retailer 5
-
$1,434 USD
View
B+
Retailer 6
-
$1,556 USD
View
B+
Retailer 7
-
$1,724 USD
View
B
Retailer 8
-
$1,960 USD
View
Most Expensive
C
NZ Jewellers
2fe6ab8a-d131-4877-a365-51c1f3555504 · Nov 5
$3,290 USD
View
8 more retailers have this diamond
Prices start from $1,251 USDSave up to $2,039 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+
1.23ct Round
$1,251 USD