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Round|Lab Grown|IGI

0.91ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG436073676

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073676

Diamond specifications and retailer prices

From £459 GBP
$610 USD
As of October 28, 2026
Save £2,075 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,534 GBP at MOH London · As of October 29, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073676 or 436073676. Listed at 11 retailers as of October 28, 2026, with prices from £459 to £2,534, a £2,075 spread on the same certified stone. MOH London lists it at £2,534. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073676
Dimensions6.21 × 6.23 × 3.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.21 mm6.23 mm0.91 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073676
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.8%

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 28
Current: £2,534 GBP|Low: £459 GBP|High: £2,550 GBP|Avg: £1,032 GBP|+0.6%
MOH London
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£459 GBP
Retailer 5£579 GBP
Retailer 10£631 GBP
Retailer 9£649 GBP
Retailer 7£672 GBP
Retailer 11£805 GBP
Retailer 3£1,039 GBP
Retailer 8£1,087 GBP
Retailer 2£1,162 GBP
Retailer 4£1,598 GBP
MOH London£2,534 GBP

19 data points across 11 retailers

11 retailers£459 GBP to £2,534 GBP

A
Cheapest Retailer
-
£459 GBP
$610 USD
B+
Retailer 2
-
£579 GBP
$770 USD
View
B+
Retailer 3
-
£631 GBP
$838 USD
View
B+
Retailer 4
-
£649 GBP
$862 USD
View
Final sale: no returns
B+
Retailer 5
-
£672 GBP
$893 USD
View
B+
Retailer 6
-
£672 GBP
$893 USD
View
Price last confirmed 16 days ago
B+
Retailer 7
-
£1,087 GBP
$1,444 USD
View
B+
Retailer 8
-
£1,162 GBP
€1,470 EUR
View
B
Retailer 9
-
£1,598 GBP
$2,124 USD
View
B
Retailer 10
-
£1,890 GBP
$2,511 USD
View
Most Expensive
B
MOH London
LG436073676 · Oct 29
£2,534 GBP
View
10 more retailers have this diamond
Prices start from £459 GBPSave up to £2,075 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
£459 GBP