Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3505257105

Certificate GIA 3505257105

Diamond specifications and retailer prices

From $3,635 USD
As of November 1, 2026
Save $4,480 USD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,115 USD 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 $3,635 to $8,115, a $4,480 spread on the same certified stone. NZ Jewellers lists it at $8,115. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,277 USD|Low: $3,246 USD|High: $7,508 USD|Avg: $5,048 USD
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$3,635 USD
Retailer 2$3,895 USD
Retailer 1$4,277 USD
Retailer 7$4,486 USD
Retailer 9$4,556 USD
Retailer 3$4,695 USD
Retailer 6$4,959 USD
Retailer 4$5,236 USD
Retailer 10$5,682 USD
Retailer 5$5,855 USD
Retailer 8$7,378 USD

43 data points across 11 retailers

19 retailers$3,635 USD to $8,115 USD

A
Cheapest Retailer
-
$3,635 USD
A
Retailer 2
-
$3,713 USD
View
B+
Retailer 3
-
$3,895 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,010 USD
View
B+
Retailer 5
-
$4,220 USD
View
B+
Retailer 6
-
$4,220 USD
View
B+
Retailer 7
-
$4,277 USD
View
B+
Retailer 8
-
$4,486 USD
View
B+
Retailer 9
-
$4,556 USD
View
Retailer 10
-
$4,695 USD
View
Price last confirmed 29 days ago
B
Retailer 11
-
$4,869 USD
View
B
Retailer 12
-
$4,959 USD
View
Retailer 13
-
$5,145 USD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$5,236 USD
View
B
Retailer 15
-
$5,310 USD
View
B
Retailer 16
-
$5,682 USD
View
B
Retailer 17
-
$5,855 USD
View
B
Retailer 18
-
$7,378 USD
View
Most Expensive
B
NZ Jewellers
e36669c3-2456-44b6-93cd-38a64e9134e7 · Nov 7
$8,115 USD
View
18 more retailers have this diamond
Prices start from $3,635 USDSave up to $4,480 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
$3,635 USD