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1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5506549779

Certificate GIA 5506549779

Diamond specifications and retailer prices

From $5,953 SGD
As of November 4, 2026
Save $5,466 SGD (48%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,419 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5506549779. Listed at 16 retailers as of November 4, 2026, with prices from $5,953 to $11,419, a $5,466 spread on the same certified stone. NZ Jewellers lists it at $11,419. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5506549779
Dimensions6.86 × 6.80 × 4.31 mm
L/W Ratio1.01
Top View
6.86 mm6.80 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5506549779
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.0%

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 4
Current: $7,258 SGD|Low: $5,953 SGD|High: $10,740 SGD|Avg: $7,308 SGD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6$5,953 SGD
Retailer 7$6,302 SGD
Retailer 3$6,371 SGD
Retailer 4$6,553 SGD
Retailer 9$6,827 SGD
Retailer 8$6,882 SGD
Retailer 1$7,258 SGD
Retailer 2$8,329 SGD
Retailer 5$10,584 SGD

38 data points across 9 retailers

16 retailers$5,953 SGD to $11,419 SGD

B+
Cheapest Retailer
-
$5,953 SGD
B+
Retailer 2
-
$6,302 SGD
View
Final sale: no returns
B+
Retailer 3
-
$6,371 SGD
View
B+
Retailer 4
-
$6,399 SGD
View
B+
Retailer 5
-
$6,553 SGD
View
B+
Retailer 6
-
$6,827 SGD
View
Retailer 7
-
$6,827 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$6,827 SGD
View
Retailer 9
-
$6,882 SGD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$7,023 SGD
View
B+
Retailer 11
-
$7,258 SGD
View
B
Retailer 12
-
$7,878 SGD
View
B
Retailer 13
-
$8,329 SGD
View
B
Retailer 14
-
$10,584 SGD
View
B
Retailer 15
-
$11,286 SGD
View
Most Expensive
B
NZ Jewellers
1b6d518d-5cca-4551-b172-f30750849a94 · Nov 5
$11,419 SGD
$8,940 USD
View
15 more retailers have this diamond
Prices start from $5,953 SGDSave up to $5,466 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
$5,953 SGD