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Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1538212314

Certificate GIA 1538212314

Diamond specifications and retailer prices

From $4,934 SGD
As of November 1, 2026
Save $2,463 SGD (33%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,271 SGD at Cape Diamonds · As of October 31, 2026
View at Cape Diamonds

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 1538212314. Listed at 13 retailers as of November 1, 2026, with a 50% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle32°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1538212314
Dimensions6.92 × 6.87 × 4.16 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Key to symbols
Crystal, Cloud, Needle
Top View
6.92 mm6.87 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538212314
Side View
Table 59.0%Crown 32°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.3%

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 1
Current: $8,271 SGD|Low: $4,689 SGD|High: $8,271 SGD|Avg: $6,425 SGD|+2.2%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5$4,934 SGD
Retailer 6$5,628 SGD
Retailer 8$5,754 SGD
Retailer 9$6,271 SGD
Retailer 7$6,452 SGD
Retailer 3$6,673 SGD
Retailer 2$6,953 SGD
Retailer 4$7,397 SGD
Cape Diamonds$8,271 SGD

41 data points across 9 retailers

13 retailers$4,934 SGD to $7,397 SGD

B+
Cheapest Retailer
-
$4,934 SGD
B+
Retailer 2
-
$5,316 SGD
View
Retailer 3
-
$5,754 SGD
View
Price last confirmed 4 days ago
B
Retailer 4
-
$6,271 SGD
View
B
Retailer 5
-
$6,452 SGD
View
B
Retailer 6
-
$6,673 SGD
View
B
Retailer 7
-
$6,844 SGD
View
B
Retailer 8
-
$6,844 SGD
View
Retailer 9
-
$6,913 SGD
View
Price last confirmed 7 days ago
B
Retailer 10
-
$6,953 SGD
View
B
Retailer 11
-
$7,074 SGD
View
B
Retailer 12
-
$7,397 SGD
View
Most Expensive
Cape Diamonds
cert_1538212314 · Oct 31
$8,271 SGD
ZAR 104,263 ZAR
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from $4,934 SGDSave up to $2,463 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
$4,934 SGD