Cushion|Lab Grown|IGI

0.99ct D VVS1 Cushion Lab Grown Diamond

VG • D/VVS1 • IGI LG831688151

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831688151

Diamond specifications and retailer prices

From £343 GBP
$459 USD
As of October 30, 2026
Save £630 GBP (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £972 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831688151 or 831688151. Listed at 7 retailers as of October 29, 2026, with prices from £343 to £972, a £630 spread on the same certified stone. MOH London lists it at £972. 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

0.99
Carat
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831688151
Dimensions5.73 × 5.71 × 3.78 mm
L/W Ratio1.00
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
5.73 mm5.71 mm0.99 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831688151
Side View
Table 66.0%Crown 36°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 66.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £972 GBP|Low: £343 GBP|High: £972 GBP|Avg: £571 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4£343 GBP
Retailer 2£392 GBP
Retailer 7£402 GBP
Retailer 3£462 GBP
Retailer 5£653 GBP
Retailer 6£814 GBP
MOH London£972 GBP

14 data points across 7 retailers

7 retailers£343 GBP to £972 GBP

A
Cheapest Retailer
-
£343 GBP
$459 USD
A
Retailer 2
-
£392 GBP
€500 EUR
View
B+
Retailer 3
-
£402 GBP
$539 USD
View
B+
Retailer 4
-
£462 GBP
View
Retailer 5
-
£653 GBP
$875 USD
View
Price last confirmed 13 days ago
B
Retailer 6
-
£814 GBP
$1,091 USD
View
Most Expensive
B
MOH London
LG831688151 · Oct 29
£972 GBP
View
6 more retailers have this diamond
Prices start from £343 GBPSave up to £630 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
0.99ct Cushion
£343 GBP