Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 7518928166

Certificate GIA 7518928166

Diamond specifications and retailer prices

From $4,259 USD
As of October 28, 2026
Save $4,757 USD (53%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $9,016 USD at NZ Jewellers · As of October 20, 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 7518928166. Listed at 28 retailers as of October 27, 2026, with a 112% 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7518928166
Dimensions6.87 × 6.94 × 4.34 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
6.87 mm6.94 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7518928166
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: Oct 28
Current: $5,217 USD|Low: $4,132 USD|High: $8,689 USD|Avg: $5,677 USD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 4$4,259 USD
Retailer 11$4,405 USD
Retailer 2$4,507 USD
Retailer 9$4,883 USD
Retailer 12$5,169 USD
Retailer 7$5,194 USD
Retailer 1$5,217 USD
Retailer 3$5,434 USD
Retailer 10$5,906 USD
Retailer 6$6,091 USD
Retailer 8$6,564 USD
Retailer 5$8,631 USD

36 data points across 12 retailers

28 retailers$4,259 USD to $9,016 USD

A
Cheapest Retailer
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$4,259 USD
A
Retailer 2
-
$4,405 USD
View
A
Retailer 3
-
$4,507 USD
View
Final sale: no returns
A
Retailer 4
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$4,600 USD
View
A
Retailer 5
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$4,883 USD
View
A
Retailer 6
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$4,883 USD
View
Price last confirmed 41 days ago
A
Retailer 7
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$4,883 USD
View
Price last confirmed 21 days ago
A
Retailer 8
-
$4,883 USD
View
Price last confirmed 13 days ago
A
Retailer 9
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$4,883 USD
View
Price last confirmed 29 days ago
A
Retailer 10
-
$4,883 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$5,169 USD
View
B+
Retailer 12
-
$5,169 USD
View
Price last confirmed 19 days ago
A
Retailer 13
-
$5,194 USD
£4,089 GBP
View
A
Retailer 14
-
$5,217 USD
£4,108 GBP
View
B+
Retailer 15
-
$5,434 USD
A$8,360 AUD
View
Price last confirmed 19 days ago
B+
Retailer 16
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$5,635 USD
View
Price last confirmed 37 days ago
B+
Retailer 17
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$5,635 USD
View
Price last confirmed 19 days ago
B+
Retailer 18
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$5,635 USD
View
Price last confirmed 8 days ago
B+
Retailer 19
-
$5,635 USD
View
B+
Retailer 20
-
$5,906 USD
£4,650 GBP
View
B+
Retailer 21
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$5,949 USD
View
Price last confirmed 14 days ago
B+
Retailer 22
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$6,091 USD
€5,801 EUR
View
B+
Retailer 23
-
$6,564 USD
ZAR 106,041 ZAR
View
B
Retailer 24
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$8,631 USD
£6,796 GBP
View
B
Retailer 25
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$9,016 USD
View
B
Retailer 26
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$9,016 USD
View
Price last confirmed 39 days ago
B
Retailer 27
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$9,016 USD
View
Price last confirmed 32 days ago
Most Expensive
B
NZ Jewellers
2682f6d3-f1db-4e26-aa79-b95c94e1323a · Oct 20
$9,016 USD
View
Price last confirmed 8 days ago
27 more retailers have this diamond
Prices start from $4,259 USDSave up to $4,757 USD

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
$4,259 USD