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Round|Lab Grown|IGI

1.17ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG794602623

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794602623

Diamond specifications and retailer prices

From £172 GBP
$231 USD
As of October 26, 2026
Save £817 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £990 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.17ct lab-grown round diamond

This 1.17ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794602623 or 794602623. Listed at 18 retailers as of October 26, 2026, with prices from £172 to £990, a £817 spread on the same certified stone. MOH London lists it at £990. 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

1.17
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794602623
Dimensions6.67 × 6.63 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.67 mm6.63 mm1.17 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794602623
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: £990 GBP|Low: £140 GBP|High: £990 GBP|Avg: £390 GBP|+28.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 4£162 GBP
Retailer 14£172 GBP
Retailer 11£193 GBP
Retailer 10£214 GBP
Retailer 9£290 GBP
Retailer 3£310 GBP
Retailer 2£349 GBP
Retailer 5£403 GBP
Retailer 8£469 GBP
Retailer 13£488 GBP
Retailer 7£528 GBP
Retailer 6£538 GBP
Retailer 12£727 GBP
MOH London£990 GBP

30 data points across 14 retailers

18 retailers£172 GBP to £990 GBP

Retailer 1
-
£140 GBP
$187 USD
Price last confirmed 21 days ago
Retailer 2
-
£162 GBP
$217 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
£172 GBP
$231 USD
View
Retailer 4
-
£173 GBP
$232 USD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
£193 GBP
$258 USD
View
Final sale: no returns
A
Retailer 6
-
£200 GBP
$268 USD
View
B+
Retailer 7
-
£214 GBP
$287 USD
View
B+
Retailer 8
-
£290 GBP
$388 USD
View
Retailer 9
-
£310 GBP
$415 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
£349 GBP
€445 EUR
View
A
Retailer 11
-
£469 GBP
$628 USD
View
B+
Retailer 12
-
£488 GBP
$654 USD
View
Retailer 13
-
£517 GBP
$693 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
£528 GBP
$708 USD
View
Retailer 15
-
£541 GBP
$725 USD
View
Price last confirmed 7 days ago
Retailer 16
-
£556 GBP
$745 USD
View
Price last confirmed 31 days ago
B+
Retailer 17
-
£727 GBP
$974 USD
View
Most Expensive
B+
MOH London
LG794602623 · Oct 26
£990 GBP
View
17 more retailers have this diamond
Prices start from £172 GBPSave up to £817 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
1.17ct Round
£172 GBP