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Round|Lab Grown|IGI

1.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG638427518

Shape and cutting style on the report: Round brilliant

Certificate IGI LG638427518

Diamond specifications and retailer prices

From £206 GBP
$276 USD
As of October 31, 2026
Save £1,384 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,590 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.8ct lab-grown round diamond

This 1.8ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG638427518 or 638427518. Listed at 11 retailers as of October 31, 2026, with prices from £206 to £1,590, a £1,384 spread on the same certified stone. Do Amore Diamonds lists it at £1,590. 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

1.80
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638427518
Dimensions7.86 × 7.80 × 4.78 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
7.86 mm7.80 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638427518
Side View
Table 59.0%Crown 33.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.0%

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 31
Current: £1,590 GBP|Low: £203 GBP|High: £1,590 GBP|Avg: £615 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7£206 GBP
Retailer 8£352 GBP
Retailer 9£404 GBP
Retailer 2£417 GBP
Retailer 3£427 GBP
Retailer 6£663 GBP
Retailer 5£664 GBP
Retailer 10£730 GBP
Retailer 4£910 GBP
Do Amore Diamonds£1,590 GBP

44 data points across 10 retailers

11 retailers£206 GBP to £1,590 GBP

A
Cheapest Retailer
-
£206 GBP
$276 USD
A
Retailer 2
-
£337 GBP
$451 USD
View
B+
Retailer 3
-
£352 GBP
$471 USD
View
A
Retailer 4
-
£404 GBP
$541 USD
View
A
Retailer 5
-
£417 GBP
View
A
Retailer 6
-
£427 GBP
View
B
Retailer 7
-
£663 GBP
$889 USD
View
B+
Retailer 8
-
£664 GBP
$890 USD
View
B
Retailer 9
-
£730 GBP
$978 USD
View
B
Retailer 10
-
£910 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B5EA51ED6 · Nov 2
£1,590 GBP
$2,130 USD
View
10 more retailers have this diamond
Prices start from £206 GBPSave up to £1,384 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
1.80ct Round
£206 GBP