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Cushion|Lab Grown|IGI

1.01ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG816607704

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG816607704

Diamond specifications and retailer prices

From £234 GBP
$314 USD
As of October 30, 2026
Save £683 GBP (74%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £917 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG816607704 or 816607704. Listed at 8 retailers as of October 30, 2026, with prices from £234 to £917, a £683 spread on the same certified stone. Reve Diamonds lists it at £917. 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

1.01
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816607704
Dimensions6.46 × 5.76 × 3.58 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeLarge
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
6.46 mm5.76 mm1.01 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816607704
Side View
Table 55.0%Crown 35.2°Girdle: MED-STKPavilion 40.4°Culet: LargeDepth 62.2%

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: £361 GBP|Low: £234 GBP|High: £917 GBP|Avg: £544 GBP|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Reve Diamonds
October 30, 2026
Retailer 4£234 GBP
Retailer 5£263 GBP
Retailer 1£361 GBP
Retailer 7£528 GBP
Retailer 3£630 GBP
Retailer 6£667 GBP
Retailer 2£784 GBP
Reve Diamonds£917 GBP

25 data points across 8 retailers

8 retailers£234 GBP to £917 GBP

A
Cheapest Retailer
-
£234 GBP
$314 USD
B+
Retailer 2
-
£263 GBP
$352 USD
View
B+
Retailer 3
-
£361 GBP
View
B
Retailer 4
-
£528 GBP
SGD 956 SGD
View
B
Retailer 5
-
£630 GBP
$844 USD
View
B
Retailer 6
-
£667 GBP
$894 USD
View
B
Retailer 7
-
£784 GBP
View
Most Expensive
C
Reve Diamonds
A0C059B10 · Oct 30
£917 GBP
$1,229 USD
View
7 more retailers have this diamond
Prices start from £234 GBPSave up to £683 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
1.01ct Cushion
£234 GBP