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Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6551678903

Certificate GIA 6551678903

Diamond specifications and retailer prices

From $4,266 SGD
As of November 4, 2026
Save $5,006 SGD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,411 SGD at NZ Jewellers · As of September 25, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551678903. Listed at 17 retailers as of November 4, 2026, with a 117% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551678903
Dimensions6.98 × 6.93 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.98 mm6.93 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551678903
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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 4
Current: $5,375 SGD|Low: $4,234 SGD|High: $9,497 SGD|Avg: $5,917 SGD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 3$4,266 SGD
Retailer 12$4,515 SGD
Retailer 11$4,704 SGD
Retailer 10$4,837 SGD
Retailer 6$4,881 SGD
Retailer 14$5,033 SGD
Retailer 15$5,045 SGD
Retailer 5$5,133 SGD
Retailer 1$5,375 SGD
Retailer 2$5,597 SGD
Retailer 7$6,440 SGD
Retailer 8$7,121 SGD
Retailer 4$7,447 SGD
Retailer 13$8,679 SGD
Retailer 9$9,272 SGD

28 data points across 15 retailers

17 retailers$4,266 SGD to $9,272 SGD

A
Cheapest Retailer
-
$4,266 SGD
A
Retailer 2
-
$4,515 SGD
View
A
Retailer 3
-
$4,704 SGD
View
A
Retailer 4
-
$4,837 SGD
View
A
Retailer 5
-
$4,881 SGD
View
Final sale: no returns
A
Retailer 6
-
$5,033 SGD
View
A
Retailer 7
-
$5,045 SGD
View
A
Retailer 8
-
$5,133 SGD
View
A
Retailer 9
-
$5,375 SGD
View
A
Retailer 10
-
$5,593 SGD
View
A
Retailer 11
-
$5,597 SGD
View
Retailer 12
-
$5,968 SGD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
$7,121 SGD
View
B+
Retailer 14
-
$7,447 SGD
View
B+
Retailer 15
-
$8,679 SGD
View
B+
Retailer 16
-
$9,272 SGD
View
Most Expensive
NZ Jewellers
9a869dfd-3c5c-419e-899d-e93f71b54a19 · Sep 25
$10,411 SGD
$8,151 USD
View
Price last confirmed 41 days ago
16 more retailers have this diamond
Prices start from $4,266 SGDSave up to $5,006 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
$4,266 SGD