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Cushion|Lab Grown|IGI

1.57ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG677531981

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG677531981

Diamond specifications and retailer prices

From £207 GBP
$277 USD
As of October 28, 2026
Save £1,249 GBP (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,455 GBP at Brilliant Earth · As of October 29, 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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG677531981 or 677531981. Listed at 17 retailers as of October 28, 2026, with prices from £207 to £1,455, a £1,249 spread on the same certified stone. Brilliant Earth lists it at £1,455. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677531981
Dimensions6.89 × 6.70 × 4.21 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.89 mm6.70 mm1.57 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677531981
Side View
Table 66.0%Crown 35.9°Girdle: STK-THKPavilion 36.7°Culet: NoneDepth 62.8%

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 28
Current: £1,455 GBP|Low: £207 GBP|High: £1,470 GBP|Avg: £636 GBP|-1.0%
Brilliant Earth
Retailer 2
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 28, 2026
Retailer 8£207 GBP
Retailer 4£230 GBP
Retailer 17£315 GBP
Retailer 13£372 GBP
Retailer 11£395 GBP
Retailer 10£407 GBP
Retailer 6£428 GBP
Retailer 2£435 GBP
Retailer 12£536 GBP
Retailer 16£592 GBP
Retailer 5£709 GBP
Retailer 7£778 GBP
Retailer 3£854 GBP
Retailer 14£922 GBP
Retailer 9£1,006 GBP
Retailer 18£1,041 GBP
Retailer 15£1,142 GBP
Brilliant Earth£1,455 GBP

41 data points across 18 retailers

17 retailers£207 GBP to £1,455 GBP

A
Cheapest Retailer
-
£207 GBP
$277 USD
Final sale: no returns
A
Retailer 2
-
£230 GBP
$308 USD
View
B+
Retailer 3
-
£315 GBP
$422 USD
View
A
Retailer 4
-
£372 GBP
€475 EUR
View
A
Retailer 5
-
£395 GBP
ZAR 8,551 ZAR
View
A
Retailer 6
-
£428 GBP
$574 USD
View
A
Retailer 7
-
£435 GBP
View
A
Retailer 8
-
£536 GBP
A$1,105 AUD
View
B+
Retailer 9
-
£592 GBP
$793 USD
View
B+
Retailer 10
-
£723 GBP
$969 USD
View
B+
Retailer 11
-
£778 GBP
$1,042 USD
View
B+
Retailer 12
-
£854 GBP
$1,144 USD
View
B+
Retailer 13
-
£922 GBP
View
B
Retailer 14
-
£1,006 GBP
$1,348 USD
View
Retailer 15
-
£1,041 GBP
A$2,145 AUD
View
Price last confirmed 22 days ago
Retailer 16
-
£1,142 GBP
$1,530 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
14064960A · Oct 29
£1,455 GBP
$1,950 USD
View
16 more retailers have this diamond
Prices start from £207 GBPSave up to £1,249 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
£207 GBP