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Cushion|Lab Grown|IGI

1.57ct D VVS2 Cushion Lab Grown Diamond

VG • D/VVS2 • IGI LG628451220

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG628451220

Diamond specifications and retailer prices

From £229 GBP
$307 USD
As of October 30, 2026
Save £1,383 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,612 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.57ct lab-grown cushion diamond

This 1.57ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG628451220 or 628451220. Listed at 19 retailers as of October 28, 2026, with prices from £229 to £1,612, a £1,383 spread on the same certified stone. Brilliant Earth lists it at £1,612. 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

1.57
Carat
D
Colour
VVS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628451220
Dimensions6.67 × 6.66 × 4.49 mm
L/W Ratio1.00
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
6.67 mm6.66 mm1.57 ctD / VVS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628451220
Side View
Table 66.0%Crown 42°Girdle: MED-THKPavilion 38°Culet: NoneDepth 67.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,612 GBP|Low: £229 GBP|High: £1,761 GBP|Avg: £604 GBP|-8.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 5£229 GBP
Retailer 3£254 GBP
Retailer 6£342 GBP
Retailer 12£343 GBP
Retailer 11£436 GBP
Retailer 7£446 GBP
Retailer 4£451 GBP
Retailer 2£452 GBP
Retailer 10£589 GBP
Retailer 8£608 GBP
Retailer 13£832 GBP
Retailer 14£902 GBP
Retailer 9£1,022 GBP
Brilliant Earth£1,612 GBP

44 data points across 14 retailers

19 retailers£229 GBP to £1,612 GBP

A
Cheapest Retailer
-
£229 GBP
$307 USD
Final sale: no returns
Retailer 2
-
£254 GBP
$340 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£287 GBP
HK$3,000 HKD
View
B+
Retailer 4
-
£342 GBP
$458 USD
View
A
Retailer 5
-
£343 GBP
$460 USD
View
A
Retailer 6
-
£436 GBP
ZAR 9,428 ZAR
View
A
Retailer 7
-
£446 GBP
View
A
Retailer 8
-
£451 GBP
$604 USD
View
A
Retailer 9
-
£452 GBP
€577 EUR
View
A
Retailer 10
-
£469 GBP
$628 USD
View
B+
Retailer 11
-
£589 GBP
A$1,215 AUD
View
B+
Retailer 12
-
£608 GBP
$814 USD
View
B+
Retailer 13
-
£816 GBP
SGD 1,477 SGD
View
Retailer 14
-
£832 GBP
A$1,716 AUD
View
Price last confirmed 28 days ago
B
Retailer 15
-
£853 GBP
$1,143 USD
View
B
Retailer 16
-
£902 GBP
$1,209 USD
View
B
Retailer 17
-
£1,022 GBP
View
B
Retailer 18
-
£1,067 GBP
$1,429 USD
View
Most Expensive
B
Brilliant Earth
9776374A · Oct 28
£1,612 GBP
$2,160 USD
View
18 more retailers have this diamond
Prices start from £229 GBPSave up to £1,383 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
1.57ct Cushion
£229 GBP