CaratHunter
Plans
Cushion|Lab Grown|IGI

0.91ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG517283270

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG517283270

Diamond specifications and retailer prices

From £104 GBP
$139 USD
As of October 30, 2026
Save £861 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £965 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.91ct lab-grown cushion diamond

This 0.91ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG517283270 or 517283270. Listed at 12 retailers as of October 29, 2026, with prices from £104 to £965, a £861 spread on the same certified stone. MOH London lists it at £965. 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

0.91
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517283270
Dimensions6.80 × 5.50 × 3.43 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
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
6.80 mm5.50 mm0.91 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG517283270
Side View
Table 58.5%Crown 34.1°Girdle: MED-THKPavilion 37.3°Culet: NoneDepth 62.4%

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: £965 GBP|Low: £104 GBP|High: £972 GBP|Avg: £334 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10£104 GBP
Retailer 7£122 GBP
Retailer 4£207 GBP
Retailer 8£220 GBP
Retailer 5£237 GBP
Retailer 2£237 GBP
Retailer 9£353 GBP
Retailer 6£403 GBP
Retailer 3£448 GBP
MOH London£965 GBP

43 data points across 10 retailers

12 retailers£104 GBP to £965 GBP

A
Cheapest Retailer
-
£104 GBP
$139 USD
Final sale: no returns
A
Retailer 2
-
£122 GBP
$164 USD
View
B+
Retailer 3
-
£193 GBP
$259 USD
View
A
Retailer 4
-
£207 GBP
€264 EUR
View
B+
Retailer 5
-
£220 GBP
$295 USD
View
B+
Retailer 6
-
£237 GBP
View
B+
Retailer 7
-
£237 GBP
View
B+
Retailer 8
-
£353 GBP
$473 USD
View
Retailer 9
-
£403 GBP
$540 USD
View
Price last confirmed 16 days ago
B
Retailer 10
-
£412 GBP
$552 USD
View
B+
Retailer 11
-
£448 GBP
$600 USD
View
Most Expensive
B
MOH London
LG517283270 · Oct 29
£965 GBP
View
11 more retailers have this diamond
Prices start from £104 GBPSave up to £861 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
0.91ct Cushion
£104 GBP