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Radiant|Lab Grown|IGI

1.83ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG637451313

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG637451313

Diamond specifications and retailer prices

From £144 GBP
$193 USD
As of October 27, 2026
Save £1,235 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,379 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.83ct lab-grown radiant diamond

This 1.83ct lab-grown radiant 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 LG637451313 or 637451313. Listed at 11 retailers as of October 27, 2026, with prices from £144 to £1,379, a £1,235 spread on the same certified stone. Do Amore Diamonds lists it at £1,379. 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

1.83
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG637451313
Dimensions8.70 × 6.00 × 4.11 mm
L/W Ratio1.45
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.70 mm6.00 mm1.83 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG637451313
Side View
Table 62.0%Crown 42°Girdle: MediumPavilion 35.2°Culet: NoneDepth 68.5%

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 27
Current: £1,379 GBP|Low: £144 GBP|High: £1,438 GBP|Avg: £582 GBP|-4.1%
Do Amore Diamonds
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
October 29, 2026
Retailer 10£144 GBP
Retailer 8£167 GBP
Retailer 3£168 GBP
Retailer 7£254 GBP
Retailer 12£311 GBP
Retailer 4£387 GBP
Retailer 5£555 GBP
Retailer 9£575 GBP
Retailer 13£618 GBP
Retailer 11£633 GBP
Retailer 2£793 GBP
Retailer 6£858 GBP
Retailer 14£1,006 GBP
Do Amore Diamonds£1,379 GBP

26 data points across 14 retailers

11 retailers£144 GBP to £1,379 GBP

A
Cheapest Retailer
-
£144 GBP
$193 USD
A
Retailer 2
-
£167 GBP
$224 USD
View
A
Retailer 3
-
£168 GBP
$225 USD
View
Final sale: no returns
A
Retailer 4
-
£254 GBP
View
B+
Retailer 5
-
£311 GBP
$417 USD
View
Retailer 6
-
£575 GBP
$772 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£618 GBP
$830 USD
View
B+
Retailer 8
-
£633 GBP
$850 USD
View
B+
Retailer 9
-
£793 GBP
View
B
Retailer 10
-
£1,006 GBP
$1,350 USD
View
Most Expensive
B
Do Amore Diamonds
27-710EB9608 · Oct 29
£1,379 GBP
$1,850 USD
View
10 more retailers have this diamond
Prices start from £144 GBPSave up to £1,235 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
1.83ct Radiant
£144 GBP