Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3505257105

Certificate GIA 3505257105

Diamond specifications and retailer prices

From €3,256 EUR
As of November 1, 2026
Save €4,013 EUR (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €7,268 EUR at NZ Jewellers · As of November 7, 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 3505257105. Listed at 19 retailers as of November 1, 2026, with prices from €3,256 to €7,268, a €4,013 spread on the same certified stone. NZ Jewellers lists it at €7,268. 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 angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3505257105
Dimensions7.02 × 6.99 × 4.28 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.02 mm6.99 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3505257105
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €3,831 EUR|Low: €2,907 EUR|High: €6,725 EUR|Avg: €4,522 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11€3,256 EUR
Retailer 2€3,489 EUR
Retailer 1€3,831 EUR
Retailer 7€4,018 EUR
Retailer 9€4,081 EUR
Retailer 3€4,205 EUR
Retailer 6€4,442 EUR
Retailer 4€4,690 EUR
Retailer 10€5,089 EUR
Retailer 5€5,244 EUR
Retailer 8€6,608 EUR

43 data points across 11 retailers

19 retailers€3,256 EUR to €7,268 EUR

A
Cheapest Retailer
-
€3,256 EUR
A
Retailer 2
-
€3,326 EUR
View
B+
Retailer 3
-
€3,489 EUR
View
Final sale: no returns
B+
Retailer 4
-
€3,592 EUR
View
B+
Retailer 5
-
€3,780 EUR
View
B+
Retailer 6
-
€3,780 EUR
View
B+
Retailer 7
-
€3,831 EUR
View
B+
Retailer 8
-
€4,018 EUR
View
B+
Retailer 9
-
€4,081 EUR
View
Retailer 10
-
€4,205 EUR
View
Price last confirmed 29 days ago
B
Retailer 11
-
€4,361 EUR
View
B
Retailer 12
-
€4,442 EUR
View
Retailer 13
-
€4,608 EUR
View
Price last confirmed 15 days ago
B+
Retailer 14
-
€4,690 EUR
View
B
Retailer 15
-
€4,756 EUR
View
B
Retailer 16
-
€5,089 EUR
View
B
Retailer 17
-
€5,244 EUR
View
B
Retailer 18
-
€6,608 EUR
View
Most Expensive
B
NZ Jewellers
e36669c3-2456-44b6-93cd-38a64e9134e7 · Nov 7
€7,268 EUR
$8,115 USD
View
18 more retailers have this diamond
Prices start from €3,256 EURSave up to €4,013 EUR

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
€3,256 EUR