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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 5526567353

Certificate GIA 5526567353

Diamond specifications and retailer prices

From £1,872 GBP
As of November 6, 2026
Save £1,202 GBP (39%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,074 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 5526567353. Listed at 6 retailers as of November 6, 2026, with prices from £1,872 to £3,074, a £1,202 spread on the same certified stone. 77 Diamonds lists it at £3,074. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5526567353
Dimensions6.50 × 5.89 × 4.11 mm
L/W Ratio1.10
Top View
6.50 mm5.89 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5526567353
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.8%

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 6
Current: £3,074 GBP|Low: £1,872 GBP|High: £3,135 GBP|Avg: £2,352 GBP|+0.4%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£1,872 GBP
Retailer 2£2,071 GBP
77 Diamonds£3,074 GBP

39 data points across 3 retailers

6 retailers£1,872 GBP to £3,074 GBP

A
Cheapest Retailer
-
£1,872 GBP
A
Retailer 2
-
£2,034 GBP
View
A
Retailer 3
-
£2,046 GBP
View
A
Retailer 4
-
£2,071 GBP
View
A
Retailer 5
-
£2,134 GBP
View
Most Expensive
B+
77 Diamonds
CUSZCPYKTYVG · Nov 6
£3,074 GBP
View
5 more retailers have this diamond
Prices start from £1,872 GBPSave up to £1,202 GBP

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
£1,872 GBP