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Round|Natural|GIA

1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5553650322

Certificate GIA 5553650322

Diamond specifications and retailer prices

From $2,854 SGD
As of November 6, 2026
Save $5,124 SGD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,978 SGD 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 $2,854 to $7,978, a $5,124 spread on the same certified stone. NZ Jewellers lists it at $7,978. 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
Colour
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: $7,978 SGD|Low: $2,672 SGD|High: $7,978 SGD|Avg: $4,158 SGD
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$2,854 SGD
Retailer 3$3,055 SGD
Retailer 4$3,095 SGD
Retailer 10$3,190 SGD
Retailer 5$3,456 SGD
Retailer 12$3,590 SGD
Retailer 9$3,947 SGD
Retailer 13$3,947 SGD
Retailer 2$4,015 SGD
Retailer 11$4,075 SGD
Retailer 7$4,448 SGD
Retailer 6$6,363 SGD
NZ Jewellers$7,978 SGD

43 data points across 13 retailers

16 retailers$2,854 SGD to $7,978 SGD

B+
Cheapest Retailer
-
$2,854 SGD
B+
Retailer 2
-
$3,095 SGD
View
B+
Retailer 3
-
$3,190 SGD
View
Final sale: no returns
B+
Retailer 4
-
$3,246 SGD
View
Retailer 5
-
$3,456 SGD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,456 SGD
View
B
Retailer 7
-
$3,590 SGD
View
B+
Retailer 8
-
$3,947 SGD
View
B+
Retailer 9
-
$3,947 SGD
View
B+
Retailer 10
-
$3,988 SGD
View
B+
Retailer 11
-
$4,015 SGD
View
B
Retailer 12
-
$4,075 SGD
View
Retailer 13
-
$4,429 SGD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$4,448 SGD
View
B
Retailer 15
-
$6,363 SGD
View
Most Expensive
B
NZ Jewellers
cf5b448f-3b88-4520-b6d7-a4918f74acfe · Nov 5
$7,978 SGD
$6,225 USD
View
15 more retailers have this diamond
Prices start from $2,854 SGDSave up to $5,124 SGD

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
$2,854 SGD