Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5556390031

Certificate GIA 5556390031

Diamond specifications and retailer prices

From $4,390 SGD
As of November 4, 2026
Save $1,843 SGD (30%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $10,259 SGD at NZ Jewellers · As of September 10, 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 5556390031. Listed at 24 retailers as of November 4, 2026, with a 42% 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
FluorescenceStrong
Crown angle31.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5556390031
Dimensions7.03 × 7.07 × 4.32 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.03 mm7.07 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5556390031
Side View
Table 59.0%Crown 31.5°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.2%

Caratlytics Score

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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: $9,875 SGD|Low: $3,873 SGD|High: $9,875 SGD|Avg: $5,798 SGD
NZ Jewellers
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 5, 2026
Retailer 9$4,359 SGD
Retailer 8$4,390 SGD
Retailer 6$4,428 SGD
Retailer 16$4,471 SGD
Retailer 5$4,519 SGD
Retailer 7$4,739 SGD
Retailer 19$4,898 SGD
Retailer 3$5,135 SGD
Retailer 12$5,135 SGD
Retailer 18$5,135 SGD
Retailer 11$5,216 SGD
Retailer 10$5,483 SGD
Retailer 21$5,589 SGD
Retailer 13$5,727 SGD
Retailer 4$5,925 SGD
Retailer 14$5,936 SGD
Retailer 2$6,233 SGD
Retailer 15$6,901 SGD
Retailer 20$8,196 SGD
Retailer 17$9,075 SGD
NZ Jewellers$9,875 SGD

39 data points across 21 retailers

24 retailers$4,390 SGD to $6,233 SGD

Retailer 1
-
$4,359 SGD
Price last confirmed 9 days ago
A
Retailer 2
-
$4,390 SGD
View
Retailer 3
-
$4,428 SGD
View
Price last confirmed 10 days ago
Retailer 4
-
$4,471 SGD
View
Price last confirmed 8 days ago
Retailer 5
-
$4,519 SGD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$4,697 SGD
View
Retailer 7
-
$4,898 SGD
View
Price last confirmed 9 days ago
Retailer 8
-
$5,135 SGD
View
Price last confirmed 11 days ago
Retailer 9
-
$5,135 SGD
View
Price last confirmed 12 days ago
Retailer 10
-
$5,135 SGD
View
Price last confirmed 12 days ago
Retailer 11
-
$5,216 SGD
View
Price last confirmed 14 days ago
Retailer 12
-
$5,335 SGD
View
Price last confirmed 56 days ago
Retailer 13
-
$5,483 SGD
View
Price last confirmed 10 days ago
Retailer 14
-
$5,589 SGD
View
Price last confirmed 8 days ago
Retailer 15
-
$5,727 SGD
View
Price last confirmed 9 days ago
Retailer 16
-
$5,925 SGD
View
Price last confirmed 10 days ago
Retailer 17
-
$5,936 SGD
View
Price last confirmed 28 days ago
Retailer 18
-
$6,155 SGD
View
Price last confirmed 56 days ago
A
Retailer 19
-
$6,233 SGD
View
Retailer 20
-
$6,901 SGD
View
Price last confirmed 10 days ago
Retailer 21
-
$8,196 SGD
View
Price last confirmed 11 days ago
Retailer 22
-
$9,075 SGD
View
Price last confirmed 20 days ago
Retailer 23
-
$9,875 SGD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
e517ba02-28b9-4889-ae77-714b4f2529f1 · Sep 10
$10,259 SGD
$8,032 USD
View
Price last confirmed 56 days ago
23 more retailers have this diamond
Prices start from $4,390 SGDSave up to $1,843 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
$4,390 SGD