CaratHunter
Plans
Cushion|Natural|GIA

1.00ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 1226075838

Certificate GIA 1226075838

Diamond specifications and retailer prices

From £1,860 GBP
As of November 4, 2026
Save £2,184 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,044 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1226075838. Listed at 18 retailers as of November 4, 2026, with prices from £1,860 to £4,044, a £2,184 spread on the same certified stone. MOH London lists it at £4,044. 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

1.00
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1226075838
Dimensions5.93 × 5.72 × 3.84 mm
L/W Ratio1.04
Culet sizeNone
Top View
5.93 mm5.72 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1226075838
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.1%

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 4
Current: £4,044 GBP|Low: £1,860 GBP|High: £4,104 GBP|Avg: £2,405 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£1,860 GBP
Retailer 7£1,900 GBP
Retailer 4£1,913 GBP
Retailer 8£2,063 GBP
Retailer 5£2,197 GBP
Retailer 6£2,371 GBP
Retailer 3£2,493 GBP
Retailer 2£2,660 GBP
MOH London£4,044 GBP

44 data points across 9 retailers

18 retailers£1,860 GBP to £4,044 GBP

B+
Cheapest Retailer
-
£1,860 GBP
B
Retailer 2
-
£1,900 GBP
View
B+
Retailer 3
-
£1,913 GBP
View
B
Retailer 4
-
£1,942 GBP
View
B
Retailer 5
-
£1,966 GBP
View
B+
Retailer 6
-
£2,029 GBP
View
B
Retailer 7
-
£2,063 GBP
View
Retailer 8
-
£2,197 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£2,243 GBP
View
B
Retailer 10
-
£2,371 GBP
View
B
Retailer 11
-
£2,385 GBP
View
B
Retailer 12
-
£2,493 GBP
View
B
Retailer 13
-
£2,503 GBP
View
B
Retailer 14
-
£2,503 GBP
View
B
Retailer 15
-
£2,585 GBP
View
B
Retailer 16
-
£2,660 GBP
View
Retailer 17
-
£2,813 GBP
View
Price last confirmed 14 days ago
Most Expensive
B
MOH London
8A63291A6 · Nov 4
£4,044 GBP
View
17 more retailers have this diamond
Prices start from £1,860 GBPSave up to £2,184 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+
1.00ct Cushion
£1,860 GBP