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Cushion|Natural|GIA

1.30ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 6541556349

Certificate GIA 6541556349

Diamond specifications and retailer prices

From £1,171 GBP
As of November 6, 2026
Save £965 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,758 GBP at MOH London · As of October 26, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541556349. Listed at 13 retailers as of November 6, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541556349
Dimensions7.29 × 5.59 × 3.82 mm
L/W Ratio1.30
Top View
7.29 mm5.59 mm1.30 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541556349
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.4%

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: £2,758 GBP|Low: £1,171 GBP|High: £2,830 GBP|Avg: £1,733 GBP|-2.5%
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
November 6, 2026
Retailer 2£1,171 GBP
Retailer 11£1,420 GBP
Retailer 6£1,525 GBP
Retailer 13£1,569 GBP
Retailer 4£1,572 GBP
Retailer 10£1,591 GBP
Retailer 5£1,606 GBP
Retailer 3£1,675 GBP
Retailer 8£1,708 GBP
Retailer 12£1,715 GBP
Retailer 9£1,919 GBP
Retailer 7£2,135 GBP
MOH London£2,758 GBP

21 data points across 13 retailers

13 retailers£1,171 GBP to £2,135 GBP

A
Cheapest Retailer
-
£1,171 GBP
A
Retailer 2
-
£1,420 GBP
View
A
Retailer 3
-
£1,525 GBP
View
A
Retailer 4
-
£1,569 GBP
View
Retailer 5
-
£1,572 GBP
View
Price last confirmed 9 days ago
A
Retailer 6
-
£1,591 GBP
View
A
Retailer 7
-
£1,606 GBP
View
A
Retailer 8
-
£1,675 GBP
View
B+
Retailer 9
-
£1,708 GBP
View
A
Retailer 10
-
£1,715 GBP
View
B+
Retailer 11
-
£1,919 GBP
View
B+
Retailer 12
-
£2,135 GBP
View
Most Expensive
MOH London
FC4E4F787 · Oct 26
£2,758 GBP
View
Price last confirmed 11 days ago
12 more retailers have this diamond
Prices start from £1,171 GBPSave up to £965 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
£1,171 GBP