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Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2557335290

Certificate GIA 2557335290

Diamond specifications and retailer prices

From $5,316 SGD
As of November 7, 2026
Save $4,169 SGD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,485 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 2557335290. Listed at 15 retailers as of November 6, 2026, with prices from $5,316 to $9,485, a $4,169 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,485. 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 angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557335290
Dimensions6.83 × 6.86 × 4.24 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.83 mm6.86 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557335290
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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 7
Current: $8,443 SGD|Low: $5,754 SGD|High: $8,443 SGD|Avg: $6,818 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7$5,754 SGD
Retailer 8$6,271 SGD
Retailer 6$6,452 SGD
Retailer 3$6,608 SGD
Retailer 2$6,953 SGD
Retailer 5$7,373 SGD
Retailer 4$8,210 SGD
Retailer 1$8,443 SGD

42 data points across 8 retailers

15 retailers$5,316 SGD to $9,485 SGD

B+
Cheapest Retailer
-
$5,316 SGD
B+
Retailer 2
-
$5,754 SGD
View
B+
Retailer 3
-
$6,271 SGD
View
B
Retailer 4
-
$6,429 SGD
View
B
Retailer 5
-
$6,452 SGD
View
B+
Retailer 6
-
$6,608 SGD
View
B
Retailer 7
-
$6,844 SGD
View
B
Retailer 8
-
$6,844 SGD
View
B
Retailer 9
-
$6,913 SGD
View
B
Retailer 10
-
$6,953 SGD
View
B
Retailer 11
-
$7,074 SGD
View
B
Retailer 12
-
$7,373 SGD
View
B
Retailer 13
-
$8,210 SGD
View
B
Retailer 14
-
$8,443 SGD
View
Most Expensive
B
Wholesale Diamonds Direct
246422210 · Nov 6
$9,485 SGD
$7,401 USD
View
14 more retailers have this diamond
Prices start from $5,316 SGDSave up to $4,169 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
$5,316 SGD