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Cushion|Natural|GIA

1.60ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1236820956

Certificate GIA 1236820956

Diamond specifications and retailer prices

From £2,051 GBP
HK$21,500 HKD
As of November 1, 2026
Save £2,589 GBP (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,640 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.6ct natural cushion diamond

This 1.6ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1236820956. Listed at 10 retailers as of November 1, 2026, with prices from £2,051 to £4,640, a £2,589 spread on the same certified stone. MOH London lists it at £4,640. 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

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle35.85°
OriginNatural
Grading LabGIA
CertificateGIA 1236820956
Dimensions7.74 × 5.97 × 4.16 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.74 mm5.97 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1236820956
Side View
Table 66.0%CrownGirdle: STK-VTKPavilion 35.85°Culet: NoneDepth 69.8%

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 1
Current: £4,640 GBP|Low: £2,032 GBP|High: £4,696 GBP|Avg: £2,949 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5£2,051 GBP
Retailer 2£2,430 GBP
Retailer 8£2,508 GBP
Retailer 3£2,633 GBP
Retailer 6£2,750 GBP
Retailer 9£2,853 GBP
Retailer 7£2,982 GBP
Retailer 4£3,361 GBP
MOH London£4,640 GBP

40 data points across 9 retailers

10 retailers£2,051 GBP to £4,640 GBP

A
Cheapest Retailer
-
£2,051 GBP
HK$21,500 HKD
A
Retailer 2
-
£2,430 GBP
€3,106 EUR
View
A
Retailer 3
-
£2,508 GBP
$3,365 USD
View
A
Retailer 4
-
£2,633 GBP
View
A
Retailer 5
-
£2,750 GBP
$3,690 USD
View
Final sale: no returns
A
Retailer 6
-
£2,808 GBP
A$5,798 AUD
View
A
Retailer 7
-
£2,853 GBP
SGD 5,173 SGD
View
A
Retailer 8
-
£2,982 GBP
$4,001 USD
View
A
Retailer 9
-
£3,361 GBP
€4,295 EUR
View
Most Expensive
B+
MOH London
605FA1820 · Nov 2
£4,640 GBP
View
9 more retailers have this diamond
Prices start from £2,051 GBPSave up to £2,589 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
1.60ct Cushion
£2,051 GBP