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Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2536196818

Certificate GIA 2536196818

Diamond specifications and retailer prices

From $2,631 SGD
As of November 6, 2026
Save $3,373 SGD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,185 SGD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2536196818. Listed at 18 retailers as of November 4, 2026, with a 128% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2536196818
Dimensions6.95 × 7.00 × 4.30 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.95 mm7.00 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536196818
Side View
Table 61.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $3,670 SGD|Low: $2,631 SGD|High: $6,093 SGD|Avg: $3,826 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$2,631 SGD
Retailer 4$2,747 SGD
Retailer 5$3,077 SGD
Retailer 9$3,198 SGD
Retailer 2$3,615 SGD
Retailer 1$3,670 SGD
Retailer 3$4,195 SGD
Retailer 7$4,276 SGD
Retailer 6$6,005 SGD

37 data points across 9 retailers

18 retailers$2,631 SGD to $6,005 SGD

A
Cheapest Retailer
-
$2,631 SGD
A
Retailer 2
-
$2,747 SGD
View
A
Retailer 3
-
$3,077 SGD
View
B+
Retailer 4
-
$3,198 SGD
View
B+
Retailer 5
-
$3,269 SGD
View
B+
Retailer 6
-
$3,270 SGD
View
Retailer 7
-
$3,437 SGD
View
Price last confirmed 39 days ago
Retailer 8
-
$3,437 SGD
View
Price last confirmed 25 days ago
Retailer 9
-
$3,437 SGD
View
Price last confirmed 29 days ago
Retailer 10
-
$3,569 SGD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
$3,615 SGD
View
B+
Retailer 12
-
$3,616 SGD
View
B+
Retailer 13
-
$3,670 SGD
View
Retailer 14
-
$3,965 SGD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$4,195 SGD
View
B+
Retailer 16
-
$4,276 SGD
View
B
Retailer 17
-
$6,005 SGD
View
Most Expensive
NZ Jewellers
6b814ad2-5ce1-4294-a590-99e029ec5668 · Sep 28
$7,185 SGD
$5,625 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $2,631 SGDSave up to $3,373 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
$2,631 SGD