Round|Natural|GIA

1.30ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 572

Certificate GIA 572

Diamond specifications and retailer prices

From $1,889 USD
As of November 3, 2026
Save $2,717 USD (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,661 USD at NZ Jewellers · As of September 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 7 retailers as of November 2, 2026, with a 144% 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
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 572
Dimensions6.93 × 6.97 × 4.36 mm
L/W Ratio1.01
Top View
6.93 mm6.97 mm1.30 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 572
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

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 3
Current: $4,606 USD|Low: $1,879 USD|High: $4,718 USD|Avg: $2,823 USD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 23, 2026
Retailer 5$1,879 USD
Retailer 3$1,889 USD
Retailer 2$1,976 USD
Retailer 4$2,963 USD
NZ Jewellers$4,606 USD

16 data points across 5 retailers

7 retailers$1,889 USD to $4,606 USD

A
Cheapest Retailer
-
$1,889 USD
Retailer 2
-
$1,911 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
$1,976 USD
View
Retailer 4
-
$2,645 USD
View
Price last confirmed 9 days ago
Retailer 5
-
$2,963 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$4,606 USD
View
Most Expensive
NZ Jewellers
5f3b2ea0-0c04-4ccd-9aff-90c75cede802 · Sep 26
$4,661 USD
View
Price last confirmed 40 days ago
6 more retailers have this diamond
Prices start from $1,889 USDSave up to $2,717 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
$1,889 USD