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Cushion|Natural|GIA

1.30ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 2536630192

Certificate GIA 2536630192

Diamond specifications and retailer prices

From £1,712 GBP
As of November 6, 2026
Save £1,506 GBP (47%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,218 GBP at With Clarity · As of November 6, 2026
View at With Clarity

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2536630192. Listed at 7 retailers as of November 6, 2026, with prices from £1,712 to £3,218, a £1,506 spread on the same certified stone. With Clarity lists it at £3,218. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.30
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2536630192
Dimensions6.30 × 6.12 × 4.26 mm
L/W Ratio1.03
Top View
6.30 mm6.12 mm1.30 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536630192
Side View
Table 62.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 69.6%

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: £2,045 GBP|Low: £1,692 GBP|High: £3,218 GBP|Avg: £2,428 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
November 5, 2026
Retailer 2£1,712 GBP
Retailer 1£2,045 GBP
Retailer 6£2,075 GBP
Retailer 3£2,138 GBP
Retailer 5£2,379 GBP
Retailer 4£2,463 GBP
Retailer 7£2,741 GBP
Retailer 8£3,066 GBP
With Clarity£3,218 GBP

10 data points across 9 retailers

7 retailers£1,712 GBP to £3,218 GBP

A
Cheapest Retailer
-
£1,712 GBP
A
Retailer 2
-
£2,045 GBP
View
B+
Retailer 3
-
£2,075 GBP
View
B+
Retailer 4
-
£2,138 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,379 GBP
View
B+
Retailer 6
-
£2,463 GBP
View
Most Expensive
B
With Clarity
2536630192 · Nov 6
£3,218 GBP
$4,307 USD
View
6 more retailers have this diamond
Prices start from £1,712 GBPSave up to £1,506 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
£1,712 GBP