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Cushion|Natural|GIA

1.04ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 3405607355

Certificate GIA 3405607355

Diamond specifications and retailer prices

From £922 GBP
As of November 6, 2026
Save £744 GBP (45%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,666 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 1.04ct natural cushion diamond

This 1.04ct natural cushion sits in the classic one-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 3405607355. Listed at 6 retailers as of November 6, 2026, with prices from £922 to £1,666, a £744 spread on the same certified stone. Frank Darling lists it at £1,666. 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

1.04
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3405607355
Dimensions6.58 × 5.06 × 3.47 mm
L/W Ratio1.30
Top View
6.58 mm5.06 mm1.04 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3405607355
Side View
Table 61.0%CrownGirdle: MED-VTHPavilionCulet: NoneDepth 68.6%

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: £1,666 GBP|Low: £922 GBP|High: £1,666 GBP|Avg: £1,169 GBP
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£922 GBP
Retailer 3£924 GBP
Retailer 5£942 GBP
Retailer 4£950 GBP
Retailer 2£1,373 GBP
Frank Darling£1,666 GBP

36 data points across 6 retailers

6 retailers£922 GBP to £1,666 GBP

B+
Cheapest Retailer
-
£922 GBP
B+
Retailer 2
-
£924 GBP
View
B+
Retailer 3
-
£942 GBP
View
A
Retailer 4
-
£950 GBP
View
B
Retailer 5
-
£1,373 GBP
View
Most Expensive
B
Frank Darling
CU2543MR · Nov 6
£1,666 GBP
$2,231 USD
View
5 more retailers have this diamond
Prices start from £922 GBPSave up to £744 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
1.04ct Cushion
£922 GBP