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Cushion|Lab Grown|IGI

1.68ct G SI1 Cushion Lab Grown Diamond

GD • G/SI1 • IGI LG557236081

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG557236081

Diamond specifications and retailer prices

From £344 GBP
$461 USD
As of November 1, 2026
Save £1,440 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,784 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.68ct lab-grown cushion diamond

This 1.68ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG557236081 or 557236081. Listed at 11 retailers as of October 31, 2026, with prices from £344 to £1,784, a £1,440 spread on the same certified stone. Do Amore Diamonds lists it at £1,784. 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

1.68
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557236081
Dimensions6.79 × 6.74 × 4.64 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
6.79 mm6.74 mm1.68 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557236081
Side View
Table 63.0%Crown 34.4°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 68.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £1,784 GBP|Low: £280 GBP|High: £1,784 GBP|Avg: £681 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£344 GBP
Retailer 5£347 GBP
Retailer 4£352 GBP
Retailer 9£413 GBP
Retailer 2£487 GBP
Retailer 7£627 GBP
Retailer 11£662 GBP
Retailer 3£883 GBP
Retailer 10£1,006 GBP
Retailer 6£1,102 GBP
Do Amore Diamonds£1,784 GBP

37 data points across 11 retailers

11 retailers£344 GBP to £1,784 GBP

B+
Cheapest Retailer
-
£344 GBP
$461 USD
B+
Retailer 2
-
£347 GBP
$465 USD
View
B+
Retailer 3
-
£352 GBP
View
B+
Retailer 4
-
£413 GBP
$553 USD
View
B+
Retailer 5
-
£487 GBP
View
B+
Retailer 6
-
£627 GBP
$840 USD
View
B+
Retailer 7
-
£662 GBP
$887 USD
View
B
Retailer 8
-
£883 GBP
$1,183 USD
View
C
Retailer 9
-
£1,006 GBP
$1,348 USD
View
C
Retailer 10
-
£1,102 GBP
View
Most Expensive
C
Do Amore Diamonds
27-47D0A74F4 · Oct 31
£1,784 GBP
$2,390 USD
View
10 more retailers have this diamond
Prices start from £344 GBPSave up to £1,440 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+
1.68ct Cushion
£344 GBP