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Round|Natural|GIA

1.30ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5231671888

Certificate GIA 5231671888

Diamond specifications and retailer prices

From $4,536 SGD
As of November 7, 2026
Save $4,538 SGD (50%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,979 SGD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231671888. Listed at 16 retailers as of November 7, 2026, with a 100% 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

1.30
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231671888
Dimensions6.92 × 6.96 × 4.34 mm
L/W Ratio1.01
Top View
6.92 mm6.96 mm1.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5231671888
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $6,099 SGD|Low: $4,536 SGD|High: $9,508 SGD|Avg: $6,608 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$4,536 SGD
Retailer 2$5,517 SGD
Retailer 4$5,766 SGD
Retailer 1$6,099 SGD
Retailer 7$6,109 SGD
Retailer 5$6,259 SGD
Retailer 9$6,478 SGD
Retailer 6$6,989 SGD
Retailer 3$9,074 SGD

43 data points across 9 retailers

16 retailers$4,536 SGD to $9,074 SGD

A
Cheapest Retailer
-
$4,536 SGD
A
Retailer 2
-
$4,889 SGD
View
Retailer 3
-
$5,189 SGD
View
Price last confirmed 26 days ago
Retailer 4
-
$5,189 SGD
View
Price last confirmed 31 days ago
Retailer 5
-
$5,344 SGD
View
Price last confirmed 39 days ago
B+
Retailer 6
-
$5,517 SGD
View
B+
Retailer 7
-
$5,766 SGD
View
Retailer 8
-
$5,988 SGD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$6,099 SGD
View
Retailer 10
-
$6,109 SGD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
$6,259 SGD
View
B+
Retailer 12
-
$6,276 SGD
View
Retailer 13
-
$6,478 SGD
View
Price last confirmed 24 days ago
B+
Retailer 14
-
$6,989 SGD
View
B
Retailer 15
-
$9,074 SGD
View
Most Expensive
NZ Jewellers
6f44f5d5-f02c-40f3-8779-ae1411139d79 · Oct 6
$9,979 SGD
$7,786 USD
View
Price last confirmed 32 days ago
15 more retailers have this diamond
Prices start from $4,536 SGDSave up to $4,538 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.

A
1.30ct Round
$4,536 SGD