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Radiant|Lab Grown|IGI

1.74ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG618475819

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

Certificate IGI LG618475819

Diamond specifications and retailer prices

From £138 GBP
$185 USD
As of October 27, 2026
Save £1,183 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,321 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.74ct lab-grown radiant diamond

This 1.74ct 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 LG618475819 or 618475819. Listed at 9 retailers as of October 27, 2026, with prices from £138 to £1,321, a £1,183 spread on the same certified stone. Do Amore Diamonds lists it at £1,321. 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

1.74
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618475819
Dimensions8.57 × 5.82 × 3.92 mm
L/W Ratio1.47
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
8.57 mm5.82 mm1.74 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618475819
Side View
Table 67.0%Crown 42.4°Girdle: MediumPavilion 33.6°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
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: £1,321 GBP|Low: £110 GBP|High: £1,373 GBP|Avg: £606 GBP|-3.8%
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 25, 2026
Retailer 10£138 GBP
Retailer 7£160 GBP
Retailer 13£160 GBP
Retailer 12£302 GBP
Retailer 5£322 GBP
Retailer 6£407 GBP
Retailer 8£581 GBP
Retailer 3£601 GBP
Retailer 14£602 GBP
Retailer 11£607 GBP
Retailer 9£743 GBP
Retailer 2£884 GBP
Do Amore Diamonds£1,321 GBP
Retailer 4£1,328 GBP

19 data points across 14 retailers

9 retailers£138 GBP to £1,321 GBP

A
Cheapest Retailer
-
£138 GBP
$185 USD
A
Retailer 2
-
£160 GBP
$214 USD
View
A
Retailer 3
-
£160 GBP
$215 USD
View
Final sale: no returns
B+
Retailer 4
-
£302 GBP
$404 USD
View
Retailer 5
-
£581 GBP
$778 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£607 GBP
$813 USD
View
B+
Retailer 7
-
£743 GBP
$995 USD
View
B
Retailer 8
-
£884 GBP
View
Most Expensive
B
Do Amore Diamonds
27-565C12CE8 · Oct 29
£1,321 GBP
$1,770 USD
View
8 more retailers have this diamond
Prices start from £138 GBPSave up to £1,183 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
1.74ct Radiant
£138 GBP