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Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2557493818

Certificate GIA 2557493818

Diamond specifications and retailer prices

From $5,383 SGD
As of November 7, 2026
Save $4,224 SGD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,606 SGD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557493818. Listed at 12 retailers as of November 6, 2026, with prices from $5,383 to $9,606, a $4,224 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,606. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557493818
Dimensions6.81 × 6.86 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Twinning Wisp, Crystal, Feather
Top View
6.81 mm6.86 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557493818
Side View
Table 58.0%Crown 36°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 7
Current: $7,040 SGD|Low: $5,383 SGD|High: $9,606 SGD|Avg: $6,971 SGD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 7, 2026
Retailer 7$5,383 SGD
Retailer 5$5,818 SGD
Retailer 6$6,345 SGD
Retailer 4$6,532 SGD
Retailer 2$6,690 SGD
Retailer 1$7,040 SGD
Retailer 3$8,311 SGD
Wholesale Diamonds Direct$9,606 SGD

43 data points across 8 retailers

12 retailers$5,383 SGD to $9,606 SGD

B+
Cheapest Retailer
-
$5,383 SGD
B+
Retailer 2
-
$5,818 SGD
View
B+
Retailer 3
-
$6,345 SGD
View
B
Retailer 4
-
$6,504 SGD
View
B
Retailer 5
-
$6,532 SGD
View
B+
Retailer 6
-
$6,690 SGD
View
B
Retailer 7
-
$6,921 SGD
View
B
Retailer 8
-
$6,921 SGD
View
B
Retailer 9
-
$7,040 SGD
View
B
Retailer 10
-
$7,151 SGD
View
B
Retailer 11
-
$8,311 SGD
View
Most Expensive
B
Wholesale Diamonds Direct
252731742 · Nov 6
$9,606 SGD
$7,496 USD
View
11 more retailers have this diamond
Prices start from $5,383 SGDSave up to $4,224 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
$5,383 SGD