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Cushion|Lab Grown|IGI

1.86ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG800634854

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG800634854

Diamond specifications and retailer prices

From £656 GBP
$879 USD
As of October 30, 2026
Save £1,908 GBP (74%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,564 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.86ct lab-grown cushion diamond

This 1.86ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800634854 or 800634854. Listed at 16 retailers as of October 29, 2026, with prices from £656 to £2,564, a £1,908 spread on the same certified stone. MOH London lists it at £2,564. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800634854
Dimensions9.13 × 5.91 × 3.82 mm
L/W Ratio1.54
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.13 mm5.91 mm1.86 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800634854
Side View
Table 63.0%Crown 38.3°Girdle: MED-THKPavilion 29.9°Culet: NoneDepth 64.6%

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: Oct 30
Current: £2,564 GBP|Low: £656 GBP|High: £2,581 GBP|Avg: £1,460 GBP|+0.5%
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
October 31, 2026
Retailer 14£656 GBP
Retailer 3£681 GBP
Retailer 8£771 GBP
Retailer 10£821 GBP
Retailer 5£922 GBP
Retailer 11£974 GBP
Retailer 7£1,044 GBP
Retailer 9£1,251 GBP
Retailer 2£1,695 GBP
Retailer 6£2,116 GBP
Retailer 13£2,286 GBP
Retailer 4£2,288 GBP
Retailer 12£2,299 GBP
MOH London£2,564 GBP

43 data points across 14 retailers

16 retailers£656 GBP to £2,564 GBP

A
Cheapest Retailer
-
£656 GBP
$879 USD
Final sale: no returns
Retailer 2
-
£681 GBP
$912 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
£771 GBP
View
A
Retailer 4
-
£821 GBP
$1,100 USD
View
A
Retailer 5
-
£922 GBP
$1,236 USD
View
A
Retailer 6
-
£974 GBP
$1,305 USD
View
A
Retailer 7
-
£1,044 GBP
View
A
Retailer 8
-
£1,221 GBP
$1,636 USD
View
A
Retailer 9
-
£1,251 GBP
ZAR 27,076 ZAR
View
B+
Retailer 10
-
£1,695 GBP
A$3,493 AUD
View
B+
Retailer 11
-
£2,116 GBP
View
B
Retailer 12
-
£2,286 GBP
$3,064 USD
View
B
Retailer 13
-
£2,288 GBP
SGD 4,142 SGD
View
B
Retailer 14
-
£2,299 GBP
$3,081 USD
View
B
Retailer 15
-
£2,352 GBP
$3,151 USD
View
Most Expensive
B+
MOH London
LG800634854 · Oct 29
£2,564 GBP
View
15 more retailers have this diamond
Prices start from £656 GBPSave up to £1,908 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
£656 GBP