CaratHunter
Plans
Cushion|Lab Grown|IGI

1.60ct H VS1 Cushion Lab Grown Diamond

VG • H/VS1 • IGI LG551291037

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG551291037

Diamond specifications and retailer prices

From £316 GBP
$423 USD
As of October 30, 2026
Save £564 GBP (64%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £880 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG551291037 or 551291037. Listed at 5 retailers as of October 29, 2026, with prices from £316 to £880, a £564 spread on the same certified stone. MOH London lists it at £880. 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
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551291037
Dimensions6.68 × 6.61 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.68 mm6.61 mm1.60 ctH / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551291037
Side View
Table 62.5%Crown 34.4°Girdle: MED-VTKPavilion 40.1°Culet: NoneDepth 69.3%

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 30
Current: £880 GBP|Low: £316 GBP|High: £886 GBP|Avg: £559 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 4£316 GBP
Retailer 2£340 GBP
Retailer 6£369 GBP
Retailer 3£446 GBP
Retailer 7£740 GBP
Retailer 5£830 GBP
MOH London£880 GBP

9 data points across 7 retailers

5 retailers£316 GBP to £880 GBP

A
Cheapest Retailer
-
£316 GBP
$423 USD
B+
Retailer 2
-
£340 GBP
$455 USD
View
B+
Retailer 3
-
£446 GBP
$598 USD
View
B
Retailer 4
-
£830 GBP
$1,112 USD
View
Most Expensive
B+
MOH London
LG551291037 · Oct 29
£880 GBP
View
4 more retailers have this diamond
Prices start from £316 GBPSave up to £564 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
£316 GBP