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Cushion|Lab Grown|IGI

0.51ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG795616319

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG795616319

Diamond specifications and retailer prices

From £111 GBP
$149 USD
As of October 25, 2026
Save £761 GBP (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £872 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG795616319 or 795616319. Listed at 8 retailers as of October 25, 2026, with prices from £111 to £872, a £761 spread on the same certified stone. MOH London lists it at £872. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG795616319
Dimensions4.59 × 4.51 × 2.78 mm
L/W Ratio1.02
Girdle conditionFaceted
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
4.59 mm4.51 mm0.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG795616319
Side View
Table 67.0%Crown 35.7°Girdle: MED-THKPavilion 34°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: £872 GBP|Low: £111 GBP|High: £881 GBP|Avg: £275 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6£111 GBP
Retailer 8£149 GBP
Retailer 4£197 GBP
Retailer 7£205 GBP
Retailer 2£211 GBP
Retailer 5£247 GBP
Retailer 3£252 GBP
Retailer 9£275 GBP
MOH London£872 GBP

41 data points across 9 retailers

8 retailers£111 GBP to £872 GBP

A
Cheapest Retailer
-
£111 GBP
$149 USD
Retailer 2
-
£149 GBP
$200 USD
View
Price last confirmed 33 days ago
B+
Retailer 3
-
£205 GBP
$275 USD
View
B+
Retailer 4
-
£211 GBP
View
Retailer 5
-
£247 GBP
$331 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
£252 GBP
View
B+
Retailer 7
-
£275 GBP
$369 USD
View
Most Expensive
B
MOH London
LG795616319 · Oct 25
£872 GBP
View
7 more retailers have this diamond
Prices start from £111 GBPSave up to £761 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
0.51ct Cushion
£111 GBP