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Cushion|Lab Grown|IGI

1.51ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG494178637

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG494178637

Diamond specifications and retailer prices

From £277 GBP
$371 USD
As of November 1, 2026
Save £1,925 GBP (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,202 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG494178637 or 494178637. Listed at 8 retailers as of November 1, 2026, with prices from £277 to £2,202, a £1,925 spread on the same certified stone. Do Amore Diamonds lists it at £2,202. 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

1.51
Carat
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494178637
Dimensions7.83 × 6.10 × 4.17 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.83 mm6.10 mm1.51 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494178637
Side View
Table 63.5%Crown 32.2°Girdle: MED-STKPavilion 39°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
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: Nov 1
Current: £2,202 GBP|Low: £277 GBP|High: £2,202 GBP|Avg: £934 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 6£277 GBP
Retailer 8£326 GBP
Retailer 5£497 GBP
Retailer 9£597 GBP
Retailer 2£788 GBP
Retailer 3£799 GBP
Retailer 10£918 GBP
Retailer 11£1,218 GBP
Retailer 4£1,329 GBP
Retailer 7£1,331 GBP
Do Amore Diamonds£2,202 GBP

12 data points across 11 retailers

8 retailers£277 GBP to £2,202 GBP

A
Cheapest Retailer
-
£277 GBP
$371 USD
Final sale: no returns
B+
Retailer 2
-
£326 GBP
$437 USD
View
B+
Retailer 3
-
£497 GBP
$666 USD
View
B
Retailer 4
-
£788 GBP
A$1,625 AUD
View
B
Retailer 5
-
£1,218 GBP
$1,632 USD
View
B
Retailer 6
-
£1,329 GBP
View
Retailer 7
-
£1,331 GBP
View
Price last confirmed 17 days ago
Most Expensive
C
Do Amore Diamonds
27-CB613DD57 · Nov 2
£2,202 GBP
$2,950 USD
View
7 more retailers have this diamond
Prices start from £277 GBPSave up to £1,925 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
1.51ct Cushion
£277 GBP