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Cushion|Natural|GIA

1.30ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 2225244794

Certificate GIA 2225244794

Diamond specifications and retailer prices

From £1,909 GBP
As of November 4, 2026
Save £996 GBP (34%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,905 GBP at 77 Diamonds · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2225244794. Listed at 6 retailers as of November 4, 2026, with prices from £1,909 to £2,905, a £996 spread on the same certified stone. 77 Diamonds lists it at £2,905. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2225244794
Dimensions6.49 × 6.00 × 4.11 mm
L/W Ratio1.08
Top View
6.49 mm6.00 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2225244794
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,905 GBP|Low: £1,949 GBP|High: £2,943 GBP|Avg: £2,543 GBP|+1.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2£1,949 GBP
Retailer 4£2,144 GBP
Retailer 5£2,814 GBP
Retailer 3£2,886 GBP
77 Diamonds£2,905 GBP

33 data points across 5 retailers

6 retailers£1,909 GBP to £2,905 GBP

B+
Cheapest Retailer
-
£1,909 GBP
B+
Retailer 2
-
£1,949 GBP
View
B+
Retailer 3
-
£1,993 GBP
View
B+
Retailer 4
-
£2,040 GBP
View
Retailer 5
-
£2,144 GBP
View
Price last confirmed 62 days ago
Most Expensive
B
77 Diamonds
CUSMBWCTMMRDN · Nov 5
£2,905 GBP
View
5 more retailers have this diamond
Prices start from £1,909 GBPSave up to £996 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.

B+
1.30ct Cushion
£1,909 GBP