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Cushion|Natural|GIA

1.10ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5156925640

Certificate GIA 5156925640

Diamond specifications and retailer prices

From £1,674 GBP
As of November 6, 2026
Save £2,009 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,683 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.1ct natural cushion diamond

This 1.1ct natural cushion sits in the classic one-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 5156925640. Listed at 13 retailers as of November 4, 2026, with prices from £1,674 to £3,683, a £2,009 spread on the same certified stone. MOH London lists it at £3,683. 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

1.10
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5156925640
Dimensions6.63 × 5.54 × 3.55 mm
L/W Ratio1.20
Top View
6.63 mm5.54 mm1.10 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5156925640
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £3,683 GBP|Low: £1,674 GBP|High: £3,738 GBP|Avg: £2,285 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£1,674 GBP
Retailer 5£1,685 GBP
Retailer 6£1,890 GBP
Retailer 7£2,075 GBP
Retailer 3£2,218 GBP
Retailer 2£2,465 GBP
Retailer 4£2,573 GBP
MOH London£3,683 GBP

45 data points across 8 retailers

13 retailers£1,674 GBP to £3,683 GBP

B+
Cheapest Retailer
-
£1,674 GBP
Retailer 2
-
£1,685 GBP
View
Price last confirmed 9 days ago
B+
Retailer 3
-
£1,717 GBP
View
B+
Retailer 4
-
£1,726 GBP
View
B
Retailer 5
-
£1,801 GBP
View
B
Retailer 6
-
£1,842 GBP
View
B
Retailer 7
-
£1,890 GBP
View
B
Retailer 8
-
£2,071 GBP
View
B
Retailer 9
-
£2,075 GBP
View
B
Retailer 10
-
£2,218 GBP
View
B
Retailer 11
-
£2,465 GBP
View
B
Retailer 12
-
£2,573 GBP
View
Most Expensive
B
MOH London
239D0522F · Nov 4
£3,683 GBP
View
12 more retailers have this diamond
Prices start from £1,674 GBPSave up to £2,009 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+
1.10ct Cushion
£1,674 GBP