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Cushion|Natural|GIA

1.86ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6432934893

Shape and cutting style on the report: Cushion modified brilliant

Certificate GIA 6432934893

Diamond specifications and retailer prices

From £1,817 GBP
As of November 6, 2026
Save £2,295 GBP (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,112 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.86ct natural cushion diamond

This 1.86ct natural cushion sits in the one-and-a-half to two 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 6432934893. Listed at 13 retailers as of November 4, 2026, with prices from £1,817 to £4,112, a £2,295 spread on the same certified stone. MOH London lists it at £4,112. 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

1.86
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6432934893
Dimensions7.33 × 6.57 × 4.55 mm
L/W Ratio1.12
Top View
7.33 mm6.57 mm1.86 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6432934893
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 69.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,112 GBP|Low: £1,798 GBP|High: £4,173 GBP|Avg: £2,635 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£1,817 GBP
Retailer 7£2,120 GBP
Retailer 11£2,321 GBP
Retailer 9£2,351 GBP
Retailer 5£2,374 GBP
Retailer 3£2,434 GBP
Retailer 10£2,465 GBP
Retailer 4£2,524 GBP
Retailer 2£2,870 GBP
Retailer 6£3,009 GBP
MOH London£4,112 GBP

42 data points across 11 retailers

13 retailers£1,817 GBP to £4,112 GBP

A
Cheapest Retailer
-
£1,817 GBP
A
Retailer 2
-
£2,120 GBP
View
A
Retailer 3
-
£2,189 GBP
View
A
Retailer 4
-
£2,321 GBP
View
A
Retailer 5
-
£2,351 GBP
View
A
Retailer 6
-
£2,374 GBP
View
A
Retailer 7
-
£2,391 GBP
View
Retailer 8
-
£2,465 GBP
View
Price last confirmed 9 days ago
A
Retailer 9
-
£2,524 GBP
View
A
Retailer 10
-
£2,870 GBP
View
B+
Retailer 11
-
£3,009 GBP
View
B+
Retailer 12
-
£3,490 GBP
View
Most Expensive
B
MOH London
7AB8E7FDB · Nov 4
£4,112 GBP
View
12 more retailers have this diamond
Prices start from £1,817 GBPSave up to £2,295 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
1.86ct Cushion
£1,817 GBP