Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 2557251710

Certificate GIA 2557251710

Diamond specifications and retailer prices

From $2,521 USD
As of November 6, 2026
Save $2,266 USD (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,787 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion 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 stated by the retailer rather than the lab and certified by GIA 2557251710. Listed at 8 retailers as of November 2, 2026, with prices from $2,521 to $4,787, a $2,266 spread on the same certified stone. MOH London lists it at $4,787. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557251710
Dimensions7.03 × 5.46 × 3.81 mm
L/W Ratio1.29
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Natural
Top View
7.03 mm5.46 mm1.30 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557251710
Side View
Table 55.0%CrownGirdlePavilionCulet: NoneDepth 69.8%

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 6
Current: $4,787 USD|Low: $2,312 USD|High: $4,845 USD|Avg: $3,203 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$2,521 USD
Retailer 6$2,630 USD
Retailer 5$2,732 USD
Retailer 3$2,892 USD
Retailer 8$3,061 USD
Retailer 2$3,181 USD
Retailer 4$3,335 USD
MOH London$4,787 USD

45 data points across 8 retailers

8 retailers$2,521 USD to $4,787 USD

A
Cheapest Retailer
-
$2,521 USD
Final sale: no returns
A
Retailer 2
-
$2,630 USD
View
Retailer 3
-
$2,732 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$2,892 USD
View
Retailer 5
-
$3,061 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
$3,181 USD
View
B+
Retailer 7
-
$3,335 USD
View
Most Expensive
B
MOH London
AA3B9E014 · Nov 2
$4,787 USD
£3,769 GBP
View
7 more retailers have this diamond
Prices start from $2,521 USDSave up to $2,266 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 Cushion
$2,521 USD