Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2557211440

Certificate GIA 2557211440

Diamond specifications and retailer prices

From $1,830 USD
As of November 4, 2026
Save $2,427 USD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,257 USD at MOH London · As of November 4, 2026
View at MOH London

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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557211440. Listed at 13 retailers as of November 4, 2026, with prices from $1,830 to $4,257, a $2,427 spread on the same certified stone. MOH London lists it at $4,257. 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
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557211440
Dimensions6.94 × 6.90 × 4.34 mm
L/W Ratio1.01
Top View
6.94 mm6.90 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557211440
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

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 4
Current: $4,257 USD|Low: $1,817 USD|High: $5,238 USD|Avg: $2,801 USD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 12$1,830 USD
Retailer 6$1,927 USD
Retailer 8$2,223 USD
Retailer 13$2,235 USD
Retailer 16$2,235 USD
Retailer 3$2,249 USD
Retailer 2$2,331 USD
Retailer 9$2,547 USD
Retailer 4$2,554 USD
Retailer 11$2,562 USD
Retailer 15$2,716 USD
Retailer 10$2,974 USD
Retailer 5$3,042 USD
Retailer 14$3,733 USD
MOH London$4,257 USD
Retailer 7$4,700 USD

30 data points across 16 retailers

13 retailers$1,830 USD to $4,257 USD

A
Cheapest Retailer
-
$1,830 USD
Retailer 2
-
$1,927 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
$2,235 USD
View
A
Retailer 4
-
$2,235 USD
View
A
Retailer 5
-
$2,249 USD
View
Final sale: no returns
A
Retailer 6
-
$2,331 USD
View
A
Retailer 7
-
$2,547 USD
View
B+
Retailer 8
-
$2,554 USD
View
A
Retailer 9
-
$2,562 USD
View
B+
Retailer 10
-
$2,716 USD
View
B+
Retailer 11
-
$2,974 USD
View
B+
Retailer 12
-
$3,733 USD
View
Most Expensive
B
MOH London
488879128 · Nov 4
$4,257 USD
£3,352 GBP
View
12 more retailers have this diamond
Prices start from $1,830 USDSave up to $2,427 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
$1,830 USD