CaratHunter
Plans
Cushion|Lab Grown|IGI

1.57ct I VS1 Cushion Lab Grown Diamond

EX • I/VS1 • IGI LG400934999

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG400934999

Diamond specifications and retailer prices

From £1,169 GBP
$1,566 USD
As of November 1, 2026
Save £472 GBP (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,640 GBP at B2C Jewels · As of November 1, 2026
View at B2C Jewels

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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG400934999 or 400934999. Listed at 2 retailers as of November 1, 2026, with prices from £1,169 to £1,640, a £472 spread on the same certified stone. B2C Jewels lists it at £1,640. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG400934999
Dimensions7.12 × 6.56 × 4.22 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.12 mm6.56 mm1.57 ctI / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400934999
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,640 GBP|Low: £1,150 GBP|High: £1,640 GBP|Avg: £1,400 GBP
B2C Jewels
Retailer 2
November 1, 2026
Retailer 2£1,169 GBP
B2C Jewels£1,640 GBP

2 data points across 2 retailers

2 retailers£1,169 GBP to £1,640 GBP

B
Cheapest Retailer
-
£1,169 GBP
$1,566 USD
Most Expensive
C
B2C Jewels
21318863 · Nov 1
£1,640 GBP
$2,198 USD
View
1 more retailer has this diamond
Prices start from £1,169 GBPSave up to £472 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
1.57ct Cushion
£1,169 GBP