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1.81ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG485136756

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136756

Diamond specifications and retailer prices

From £746 GBP
$1,000 USD
As of October 30, 2026
Save £2,922 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,668 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485136756 or 485136756. Listed at 10 retailers as of October 29, 2026, with prices from £746 to £3,668, a £2,922 spread on the same certified stone. MOH London lists it at £3,668. 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

1.81
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136756
Dimensions7.72 × 7.75 × 4.87 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
7.72 mm7.75 mm1.81 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136756
Side View
Table 56.5%Crown 35.2°Girdle: MED-STKPavilion 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 30
Current: £3,668 GBP|Low: £746 GBP|High: £3,698 GBP|Avg: £1,987 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2£746 GBP
Retailer 4£1,198 GBP
Retailer 5£1,234 GBP
Retailer 7£1,741 GBP
Retailer 3£2,014 GBP
Retailer 6£2,319 GBP
Retailer 8£2,860 GBP
MOH London£3,668 GBP

14 data points across 8 retailers

10 retailers£746 GBP to £3,668 GBP

A
Cheapest Retailer
-
£746 GBP
$1,000 USD
B+
Retailer 2
-
£1,102 GBP
$1,476 USD
View
B+
Retailer 3
-
£1,198 GBP
$1,605 USD
View
B+
Retailer 4
-
£1,234 GBP
$1,654 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,278 GBP
$1,712 USD
View
Retailer 6
-
£1,278 GBP
$1,712 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£2,014 GBP
$2,699 USD
View
B
Retailer 8
-
£2,319 GBP
$3,107 USD
View
B
Retailer 9
-
£2,394 GBP
$3,208 USD
View
Most Expensive
B
MOH London
LG485136756 · Oct 29
£3,668 GBP
View
9 more retailers have this diamond
Prices start from £746 GBPSave up to £2,922 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
1.81ct Round
£746 GBP