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Round|Natural|GIA

1.23ct D I1 Round Natural Diamond

EX • D/I1 • GIA 2554975942

Certificate GIA 2554975942

Diamond specifications and retailer prices

From $2,242 USD
As of November 1, 2026
Save $2,949 USD (57%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,191 USD at NZ Jewellers · As of November 2, 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 D colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2554975942. Listed at 7 retailers as of November 1, 2026, with prices from $2,242 to $5,191, a $2,949 spread on the same certified stone. NZ Jewellers lists it at $5,191. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554975942
Dimensions6.82 × 6.87 × 4.29 mm
L/W Ratio1.01
Star length45%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Indented Natural
Top View
6.82 mm6.87 mm1.23 ctD / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554975942
Side View
Table 55.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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 1
Current: $5,191 USD|Low: $2,242 USD|High: $5,890 USD|Avg: $3,234 USD|-11.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5$2,242 USD
Retailer 6$2,483 USD
Retailer 7$2,538 USD
Retailer 3$2,597 USD
Retailer 4$2,865 USD
Retailer 2$3,092 USD
NZ Jewellers$5,191 USD

32 data points across 7 retailers

7 retailers$2,242 USD to $5,191 USD

A
Cheapest Retailer
-
$2,242 USD
A
Retailer 2
-
$2,483 USD
View
A
Retailer 3
-
$2,538 USD
View
A
Retailer 4
-
$2,597 USD
View
B+
Retailer 5
-
$2,865 USD
View
B+
Retailer 6
-
$3,092 USD
€2,945 EUR
View
Most Expensive
B
NZ Jewellers
9d32aab0-a845-444c-a375-339c94a9fbc2 · Nov 2
$5,191 USD
View
6 more retailers have this diamond
Prices start from $2,242 USDSave up to $2,949 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
1.23ct Round
$2,242 USD