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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1567180831

Certificate GIA 1567180831

Diamond specifications and retailer prices

From $3,740 SGD
As of November 6, 2026
Save $4,552 SGD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,639 SGD at NZ Jewellers · As of September 21, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1567180831. Listed at 20 retailers as of November 2, 2026, with a 122% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1567180831
Dimensions6.89 × 6.94 × 4.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.89 mm6.94 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567180831
Side View
Table 57.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 63.3%

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 6
Current: $3,868 SGD|Low: $3,740 SGD|High: $8,392 SGD|Avg: $5,299 SGD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$3,740 SGD
Retailer 1$3,868 SGD
Retailer 6$4,363 SGD
Retailer 2$4,577 SGD
Retailer 4$4,715 SGD
Retailer 8$4,991 SGD
Retailer 9$5,149 SGD
Retailer 3$5,311 SGD
Retailer 7$5,766 SGD
Retailer 5$6,052 SGD
Retailer 10$8,292 SGD

34 data points across 11 retailers

20 retailers$3,740 SGD to $8,292 SGD

A
Cheapest Retailer
-
$3,740 SGD
A
Retailer 2
-
$3,868 SGD
View
A
Retailer 3
-
$4,363 SGD
View
A
Retailer 4
-
$4,552 SGD
View
A
Retailer 5
-
$4,556 SGD
View
A
Retailer 6
-
$4,577 SGD
View
Final sale: no returns
B+
Retailer 7
-
$4,715 SGD
View
Retailer 8
-
$4,959 SGD
View
Price last confirmed 17 days ago
Retailer 9
-
$4,959 SGD
View
Price last confirmed 44 days ago
Retailer 10
-
$4,959 SGD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
$4,973 SGD
View
B+
Retailer 12
-
$4,991 SGD
View
B+
Retailer 13
-
$5,146 SGD
View
B+
Retailer 14
-
$5,149 SGD
View
Retailer 15
-
$5,311 SGD
View
Price last confirmed 29 days ago
Retailer 16
-
$5,721 SGD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
$5,766 SGD
View
B+
Retailer 18
-
$6,052 SGD
View
B
Retailer 19
-
$8,292 SGD
View
Most Expensive
NZ Jewellers
c4e5f4f4-57b6-4a17-9f38-eefb5c955d35 · Sep 21
$8,639 SGD
$6,741 USD
View
Price last confirmed 46 days ago
19 more retailers have this diamond
Prices start from $3,740 SGDSave up to $4,552 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
$3,740 SGD