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Round|Lab Grown|IGI

0.91ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG457056543

Shape and cutting style on the report: Round brilliant

Certificate IGI LG457056543

Diamond specifications and retailer prices

From £103 GBP
$138 USD
As of October 29, 2026
Save £495 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £598 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.91ct lab-grown round diamond

This 0.91ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG457056543 or 457056543. Listed at 12 retailers as of October 26, 2026, with prices from £103 to £598, a £495 spread on the same certified stone. MOH London lists it at £598. 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
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG457056543
Dimensions6.16 × 6.10 × 3.86 mm
L/W Ratio1.01
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
6.16 mm6.10 mm0.91 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG457056543
Side View
Table 59.0%Crown 36.8°Girdle: ThickPavilion 40.9°Culet: NoneDepth 62.9%

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 29
Current: £598 GBP|Low: £99 GBP|High: £666 GBP|Avg: £336 GBP|-0.8%
MOH London
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
October 30, 2026
Retailer 12£103 GBP
Retailer 16£116 GBP
Retailer 17£119 GBP
Retailer 3£220 GBP
Retailer 10£221 GBP
Retailer 15£238 GBP
Retailer 2£239 GBP
Retailer 6£293 GBP
Retailer 8£318 GBP
Retailer 5£327 GBP
Retailer 7£390 GBP
Retailer 14£410 GBP
Retailer 11£434 GBP
Retailer 13£500 GBP
Retailer 4£535 GBP
MOH London£598 GBP
Retailer 9£666 GBP

31 data points across 17 retailers

12 retailers£103 GBP to £598 GBP

A
Cheapest Retailer
-
£103 GBP
$138 USD
A
Retailer 2
-
£116 GBP
$155 USD
View
Final sale: no returns
A
Retailer 3
-
£119 GBP
$160 USD
View
B+
Retailer 4
-
£220 GBP
HK$2,300 HKD
View
A
Retailer 5
-
£221 GBP
€282 EUR
View
B+
Retailer 6
-
£238 GBP
$319 USD
View
A
Retailer 7
-
£239 GBP
View
B
Retailer 8
-
£410 GBP
$550 USD
View
B
Retailer 9
-
£434 GBP
$581 USD
View
B
Retailer 10
-
£500 GBP
$670 USD
View
B
Retailer 11
-
£535 GBP
SGD 969 SGD
View
Most Expensive
B
MOH London
LG457056543 · Oct 26
£598 GBP
View
11 more retailers have this diamond
Prices start from £103 GBPSave up to £495 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 Round
£103 GBP