CaratHunter
Plans
Round|Lab Grown|IGI

1.19ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG436074803

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436074803

Diamond specifications and retailer prices

From £634 GBP
$850 USD
As of October 31, 2026
Save £3,061 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,696 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.19ct lab-grown round diamond

This 1.19ct 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 LG436074803 or 436074803. Listed at 12 retailers as of October 29, 2026, with prices from £634 to £3,696, a £3,061 spread on the same certified stone. MOH London lists it at £3,696. 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

1.19
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074803
Dimensions6.70 × 6.72 × 4.26 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
6.70 mm6.72 mm1.19 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436074803
Side View
Table 57.0%Crown 35.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 63.4%

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 31
Current: £3,696 GBP|Low: £634 GBP|High: £3,725 GBP|Avg: £1,621 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
October 29, 2026
Retailer 5£634 GBP
Retailer 4£986 GBP
Retailer 9£1,105 GBP
Retailer 6£1,144 GBP
Retailer 8£1,144 GBP
Retailer 10£1,272 GBP
Retailer 11£1,564 GBP
Retailer 7£1,809 GBP
Retailer 2£1,955 GBP
Retailer 3£2,132 GBP
MOH London£3,696 GBP

17 data points across 11 retailers

12 retailers£634 GBP to £3,696 GBP

A
Cheapest Retailer
-
£634 GBP
$850 USD
B+
Retailer 2
-
£986 GBP
$1,321 USD
View
B+
Retailer 3
-
£1,073 GBP
$1,438 USD
View
B+
Retailer 4
-
£1,105 GBP
$1,480 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,144 GBP
$1,533 USD
View
Retailer 6
-
£1,144 GBP
$1,533 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
£1,272 GBP
$1,705 USD
View
B
Retailer 8
-
£1,809 GBP
$2,424 USD
View
B
Retailer 9
-
£1,955 GBP
€2,495 EUR
View
B
Retailer 10
-
£2,132 GBP
$2,857 USD
View
B
Retailer 11
-
£2,144 GBP
$2,873 USD
View
Most Expensive
B
MOH London
LG436074803 · Oct 29
£3,696 GBP
View
11 more retailers have this diamond
Prices start from £634 GBPSave up to £3,061 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
1.19ct Round
£634 GBP