Round|Natural|GIA

1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5553650322

Certificate GIA 5553650322

Diamond specifications and retailer prices

From $2,227 USD
As of November 6, 2026
Save $3,998 USD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,225 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553650322. Listed at 16 retailers as of November 5, 2026, with prices from $2,227 to $6,225, a $3,998 spread on the same certified stone. NZ Jewellers lists it at $6,225. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5553650322
Dimensions6.81 × 6.85 × 4.25 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
6.81 mm6.85 mm1.23 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553650322
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 6
Current: $6,225 USD|Low: $2,085 USD|High: $6,225 USD|Avg: $3,244 USD
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
November 6, 2026
Retailer 8$2,227 USD
Retailer 3$2,384 USD
Retailer 4$2,415 USD
Retailer 10$2,489 USD
Retailer 5$2,697 USD
Retailer 12$2,801 USD
Retailer 9$3,080 USD
Retailer 13$3,080 USD
Retailer 2$3,133 USD
Retailer 11$3,180 USD
Retailer 7$3,471 USD
Retailer 6$4,965 USD
NZ Jewellers$6,225 USD

43 data points across 13 retailers

16 retailers$2,227 USD to $6,225 USD

B+
Cheapest Retailer
-
$2,227 USD
B+
Retailer 2
-
$2,415 USD
View
B+
Retailer 3
-
$2,489 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,533 USD
View
Retailer 5
-
$2,697 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,697 USD
View
B
Retailer 7
-
$2,801 USD
View
B+
Retailer 8
-
$3,080 USD
View
B+
Retailer 9
-
$3,080 USD
View
B+
Retailer 10
-
$3,112 USD
View
B+
Retailer 11
-
$3,133 USD
View
B
Retailer 12
-
$3,180 USD
View
Retailer 13
-
$3,456 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$3,471 USD
View
B
Retailer 15
-
$4,965 USD
View
Most Expensive
B
NZ Jewellers
cf5b448f-3b88-4520-b6d7-a4918f74acfe · Nov 5
$6,225 USD
View
15 more retailers have this diamond
Prices start from $2,227 USDSave up to $3,998 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
$2,227 USD