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Cushion|Lab Grown|IGI

1.23ct E VVS1 Cushion Lab Grown Diamond

VG • E/VVS1 • IGI LG831680065

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831680065

Diamond specifications and retailer prices

From £171 GBP
$229 USD
As of October 30, 2026
Save £1,056 GBP (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,227 GBP at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831680065 or 831680065. Listed at 11 retailers as of October 30, 2026, with prices from £171 to £1,227, a £1,056 spread on the same certified stone. Helzberg Diamonds lists it at £1,227. 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

1.23
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831680065
Dimensions7.44 × 5.42 × 3.63 mm
L/W Ratio1.37
Girdle conditionFaceted
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
7.44 mm5.42 mm1.23 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831680065
Side View
Table 61.0%Crown 35.9°Girdle: STK-THKPavilion 34.8°Culet: NoneDepth 67.0%

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: £1,227 GBP|Low: £171 GBP|High: £1,227 GBP|Avg: £480 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11£171 GBP
Retailer 7£233 GBP
Retailer 2£315 GBP
Retailer 6£328 GBP
Retailer 4£346 GBP
Retailer 5£372 GBP
Retailer 8£427 GBP
Retailer 3£616 GBP
Retailer 10£649 GBP
Retailer 9£813 GBP
Helzberg Diamonds£1,227 GBP

3 data points across 11 retailers

11 retailers£171 GBP to £1,227 GBP

A
Cheapest Retailer
-
£171 GBP
$229 USD
Final sale: no returns
A
Retailer 2
-
£233 GBP
View
Retailer 3
-
£315 GBP
€402 EUR
View
A
Retailer 4
-
£328 GBP
$439 USD
View
A
Retailer 5
-
£346 GBP
View
A
Retailer 6
-
£372 GBP
$499 USD
View
B+
Retailer 7
-
£427 GBP
$572 USD
View
B
Retailer 8
-
£616 GBP
SGD 1,116 SGD
View
B
Retailer 9
-
£649 GBP
$870 USD
View
B
Retailer 10
-
£813 GBP
$1,090 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJHMOGGML · Oct 31
£1,227 GBP
$1,644 USD
View
10 more retailers have this diamond
Prices start from £171 GBPSave up to £1,056 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
1.23ct Cushion
£171 GBP