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Cushion|Natural|GIA

1.00ct D SI2 Cushion Natural Diamond

EX • D/SI2 • GIA 1186397700

Certificate GIA 1186397700

Diamond specifications and retailer prices

From £873 GBP
$1,170 USD
As of October 31, 2026
Save £1,102 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,975 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1186397700. Listed at 18 retailers as of October 29, 2026, with prices from £873 to £1,975, a £1,102 spread on the same certified stone. MOH London lists it at £1,975. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1186397700
Dimensions5.87 × 5.72 × 3.69 mm
L/W Ratio1.03
Top View
5.87 mm5.72 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1186397700
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NDepth 64.6%

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: Oct 31
Current: £1,975 GBP|Low: £728 GBP|High: £4,336 GBP|Avg: £1,189 GBP|+0.4%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 12£873 GBP
Retailer 15£881 GBP
Retailer 13£937 GBP
Retailer 7£941 GBP
Retailer 9£950 GBP
Retailer 4£966 GBP
Retailer 17£1,016 GBP
Retailer 3£1,068 GBP
Retailer 5£1,079 GBP
Retailer 8£1,099 GBP
Retailer 18£1,122 GBP
Retailer 10£1,178 GBP
Retailer 11£1,251 GBP
Retailer 16£1,267 GBP
Retailer 6£1,385 GBP
Retailer 2£1,531 GBP
Retailer 14£1,601 GBP
MOH London£1,975 GBP

45 data points across 18 retailers

18 retailers£873 GBP to £1,975 GBP

A
Cheapest Retailer
-
£873 GBP
$1,170 USD
A
Retailer 2
-
£881 GBP
$1,180 USD
View
A
Retailer 3
-
£937 GBP
$1,256 USD
View
Final sale: no returns
A
Retailer 4
-
£941 GBP
$1,261 USD
View
A
Retailer 5
-
£950 GBP
$1,272 USD
View
A
Retailer 6
-
£966 GBP
$1,294 USD
View
A
Retailer 7
-
£1,016 GBP
$1,361 USD
View
A
Retailer 8
-
£1,068 GBP
$1,431 USD
View
A
Retailer 9
-
£1,079 GBP
$1,445 USD
View
A
Retailer 10
-
£1,099 GBP
$1,473 USD
View
Retailer 11
-
£1,122 GBP
View
Price last confirmed 31 days ago
A
Retailer 12
-
£1,178 GBP
$1,578 USD
View
A
Retailer 13
-
£1,251 GBP
View
B+
Retailer 14
-
£1,267 GBP
$1,697 USD
View
B+
Retailer 15
-
£1,385 GBP
CA$2,577 CAD
View
B+
Retailer 16
-
£1,531 GBP
€1,954 EUR
View
B+
Retailer 17
-
£1,601 GBP
$2,145 USD
View
Most Expensive
B+
MOH London
ED67DCC65 · Oct 29
£1,975 GBP
View
17 more retailers have this diamond
Prices start from £873 GBPSave up to £1,102 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
1.00ct Cushion
£873 GBP