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Round|Lab Grown|IGI

1.88ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG783646812

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783646812

Diamond specifications and retailer prices

From £218 GBP
$292 USD
As of October 27, 2026
Save £520 GBP (70%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £861 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.88ct lab-grown round diamond

This 1.88ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783646812 or 783646812. Listed at 17 retailers as of October 27, 2026, with a 239% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.88
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783646812
Dimensions7.92 × 7.90 × 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 Type IIa
Top View
7.92 mm7.90 mm1.88 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783646812
Side View
Table 56.0%Crown 33.8°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £861 GBP|Low: £166 GBP|High: £871 GBP|Avg: £441 GBP|+0.1%
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
Retailer 15
November 2, 2026
Retailer 4£173 GBP
Retailer 14£203 GBP
Retailer 7£215 GBP
Retailer 13£218 GBP
Retailer 2£363 GBP
Retailer 9£367 GBP
Retailer 10£389 GBP
Retailer 11£407 GBP
Retailer 6£414 GBP
Retailer 8£501 GBP
Retailer 3£568 GBP
Retailer 12£699 GBP
Retailer 15£738 GBP
Retailer 5£820 GBP
MOH London£861 GBP

42 data points across 15 retailers

17 retailers£218 GBP to £738 GBP

Retailer 1
-
£173 GBP
$232 USD
Price last confirmed 7 days ago
Retailer 2
-
£203 GBP
$273 USD
View
Price last confirmed 7 days ago
Retailer 3
-
£215 GBP
$288 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
£218 GBP
$292 USD
View
A
Retailer 5
-
£363 GBP
€464 EUR
View
B+
Retailer 6
-
£367 GBP
$493 USD
View
A
Retailer 7
-
£389 GBP
View
A
Retailer 8
-
£407 GBP
View
Retailer 9
-
£414 GBP
$555 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£501 GBP
$672 USD
View
Retailer 11
-
£568 GBP
$762 USD
View
Price last confirmed 8 days ago
Retailer 12
-
£630 GBP
$845 USD
View
Price last confirmed 48 days ago
Retailer 13
-
£671 GBP
$900 USD
View
Price last confirmed 16 days ago
B
Retailer 14
-
£699 GBP
$938 USD
View
B+
Retailer 15
-
£738 GBP
$990 USD
View
Retailer 16
-
£820 GBP
$1,100 USD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
LG783646812 · Oct 26
£861 GBP
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from £218 GBPSave up to £520 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
1.88ct Round
£218 GBP