Round|Natural|GIA

1.30ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2528810151

Certificate GIA 2528810151

Diamond specifications and retailer prices

From $2,675 USD
As of November 4, 2026
Save $3,177 USD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,113 USD at NZ Jewellers · As of October 17, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2528810151. Listed at 18 retailers as of November 4, 2026, with a 119% 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
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528810151
Dimensions6.97 × 7.00 × 4.31 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.97 mm7.00 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 2528810151
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

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 4
Current: $3,719 USD|Low: $2,675 USD|High: $5,999 USD|Avg: $3,695 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$2,675 USD
Retailer 7$2,794 USD
Retailer 8$3,117 USD
Retailer 2$3,239 USD
Retailer 6$3,355 USD
Retailer 11$3,509 USD
Retailer 4$3,609 USD
Retailer 1$3,719 USD
Retailer 3$3,797 USD
Retailer 5$4,076 USD
Retailer 9$5,852 USD

30 data points across 11 retailers

18 retailers$2,675 USD to $5,852 USD

A
Cheapest Retailer
-
$2,675 USD
A
Retailer 2
-
$2,794 USD
View
A
Retailer 3
-
$3,117 USD
View
A
Retailer 4
-
$3,188 USD
View
A
Retailer 5
-
$3,239 USD
View
Final sale: no returns
A
Retailer 6
-
$3,281 USD
View
A
Retailer 7
-
$3,285 USD
View
A
Retailer 8
-
$3,355 USD
View
Retailer 9
-
$3,509 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$3,509 USD
View
Price last confirmed 21 days ago
A
Retailer 11
-
$3,609 USD
View
Retailer 12
-
$3,644 USD
View
Price last confirmed 22 days ago
A
Retailer 13
-
$3,719 USD
View
Retailer 14
-
$3,797 USD
View
Price last confirmed 29 days ago
Retailer 15
-
$4,049 USD
View
Price last confirmed 19 days ago
A
Retailer 16
-
$4,076 USD
View
B
Retailer 17
-
$5,852 USD
View
Most Expensive
NZ Jewellers
850537c0-77a6-497c-ab10-3d486638b5d1 · Oct 17
$6,113 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from $2,675 USDSave up to $3,177 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
$2,675 USD