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Round|Lab Grown|IGI

1.16ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG487174435

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487174435

Diamond specifications and retailer prices

From £619 GBP
$830 USD
As of October 29, 2026
Save £2,984 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,604 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.16ct lab-grown round diamond

This 1.16ct 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 LG487174435 or 487174435. Listed at 12 retailers as of October 29, 2026, with prices from £619 to £3,604, a £2,984 spread on the same certified stone. MOH London lists it at £3,604. 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

1.16
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487174435
Dimensions6.86 × 6.89 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.86 mm6.89 mm1.16 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487174435
Side View
Table 60.5%Crown 31.4°Girdle: MediumPavilion 40.2°Culet: NoneDepth 58.4%

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 29
Current: £3,604 GBP|Low: £619 GBP|High: £3,633 GBP|Avg: £1,718 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6£619 GBP
Retailer 5£962 GBP
Retailer 10£1,077 GBP
Retailer 7£1,116 GBP
Retailer 9£1,116 GBP
Retailer 11£1,243 GBP
Retailer 12£1,529 GBP
Retailer 8£1,766 GBP
Retailer 2£1,908 GBP
Retailer 3£2,080 GBP
Retailer 4£3,194 GBP
MOH London£3,604 GBP

19 data points across 12 retailers

12 retailers£619 GBP to £3,604 GBP

A
Cheapest Retailer
-
£619 GBP
$830 USD
B+
Retailer 2
-
£962 GBP
$1,289 USD
View
B+
Retailer 3
-
£1,046 GBP
$1,402 USD
View
B+
Retailer 4
-
£1,077 GBP
$1,443 USD
View
Final sale: no returns
Retailer 5
-
£1,116 GBP
$1,495 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,116 GBP
$1,495 USD
View
B
Retailer 7
-
£1,243 GBP
$1,665 USD
View
B
Retailer 8
-
£1,766 GBP
$2,366 USD
View
B
Retailer 9
-
£1,908 GBP
€2,435 EUR
View
B
Retailer 10
-
£2,080 GBP
$2,787 USD
View
B
Retailer 11
-
£2,091 GBP
$2,802 USD
View
Most Expensive
B
MOH London
LG487174435 · Oct 29
£3,604 GBP
View
11 more retailers have this diamond
Prices start from £619 GBPSave up to £2,984 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
1.16ct Round
£619 GBP