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Cushion|Lab Grown|IGI

1.51ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG407985750

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG407985750

Diamond specifications and retailer prices

From $408 USD
As of November 1, 2026
Save $679 USD (62%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,087 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG407985750 or 407985750. Listed at 3 retailers as of November 1, 2026, with prices from $408 to $1,087, a $679 spread on the same certified stone. MOH London lists it at $1,087. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407985750
Dimensions7.01 × 6.43 × 4.07 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
7.01 mm6.43 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407985750
Side View
Table 67.5%Crown 33.7°Girdle: STK-THKPavilion 36.9°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $1,087 USD|Low: $383 USD|High: $1,101 USD|Avg: $671 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$408 USD
Retailer 3$566 USD
Retailer 4$624 USD
MOH London$1,087 USD

11 data points across 4 retailers

3 retailers$408 USD to $1,087 USD

B+
Cheapest Retailer
-
$408 USD
B+
Retailer 2
-
$566 USD
View
Most Expensive
B
MOH London
LG407985750 · Nov 1
$1,087 USD
£856 GBP
View
2 more retailers have this diamond
Prices start from $408 USDSave up to $679 USD

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+
1.51ct Cushion
$408 USD