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Cushion|Lab Grown|IGI

1.60ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG566321975

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG566321975

Diamond specifications and retailer prices

From £427 GBP
$572 USD
As of October 30, 2026
Save £1,558 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,985 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.6ct lab-grown cushion diamond

This 1.6ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG566321975 or 566321975. Listed at 8 retailers as of October 29, 2026, with prices from £427 to £1,985, a £1,558 spread on the same certified stone. MOH London lists it at £1,985. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.60
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566321975
Dimensions6.95 × 6.62 × 4.14 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.95 mm6.62 mm1.60 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566321975
Side View
Table 61.0%Crown 32.2°Girdle: MED-THKPavilion 34.9°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,985 GBP|Low: £305 GBP|High: £1,998 GBP|Avg: £789 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6£427 GBP
Retailer 8£485 GBP
Retailer 7£575 GBP
Retailer 3£694 GBP
Retailer 2£732 GBP
Retailer 5£734 GBP
Retailer 4£903 GBP
MOH London£1,985 GBP

41 data points across 8 retailers

8 retailers£427 GBP to £1,985 GBP

B+
Cheapest Retailer
-
£427 GBP
$572 USD
Final sale: no returns
B+
Retailer 2
-
£485 GBP
$650 USD
View
B
Retailer 3
-
£575 GBP
$770 USD
View
B
Retailer 4
-
£694 GBP
€885 EUR
View
B
Retailer 5
-
£732 GBP
View
B
Retailer 6
-
£734 GBP
$984 USD
View
Retailer 7
-
£903 GBP
$1,210 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
LG566321975 · Oct 29
£1,985 GBP
View
7 more retailers have this diamond
Prices start from £427 GBPSave up to £1,558 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+
1.60ct Cushion
£427 GBP