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Radiant|Lab Grown|IGI

1.87ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG846662590

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

Certificate IGI LG846662590

Diamond specifications and retailer prices

From £474 GBP
$635 USD
As of October 30, 2026
Save £3,735 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,209 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.87ct lab-grown radiant diamond

This 1.87ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662590 or 846662590. Listed at 15 retailers as of October 29, 2026, with prices from £474 to £4,209, a £3,735 spread on the same certified stone. Do Amore Diamonds lists it at £4,209. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662590
Dimensions8.80 × 6.21 × 3.98 mm
L/W Ratio1.42
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.80 mm6.21 mm1.87 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662590
Side View
Table 63.0%Crown 40°Girdle: MediumPavilion 33.9°Culet: NoneDepth 64.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £4,209 GBP|Low: £474 GBP|High: £4,478 GBP|Avg: £1,793 GBP
Do Amore Diamonds
Retailer 2
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Retailer 12
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Retailer 16
October 30, 2026
Retailer 12£474 GBP
Retailer 6£516 GBP
Retailer 14£676 GBP
Retailer 3£683 GBP
Retailer 9£688 GBP
Retailer 13£899 GBP
Retailer 16£948 GBP
Retailer 11£1,024 GBP
Retailer 15£1,405 GBP
Retailer 5£1,633 GBP
Retailer 4£1,707 GBP
Retailer 7£2,342 GBP
Retailer 10£2,396 GBP
Retailer 8£2,838 GBP
Retailer 2£3,105 GBP
Do Amore Diamonds£4,209 GBP

9 data points across 16 retailers

15 retailers£474 GBP to £4,209 GBP

A
Cheapest Retailer
-
£474 GBP
$635 USD
A
Retailer 2
-
£516 GBP
$691 USD
View
A
Retailer 3
-
£676 GBP
$906 USD
View
A
Retailer 4
-
£683 GBP
$915 USD
View
A
Retailer 5
-
£688 GBP
View
A
Retailer 6
-
£899 GBP
$1,204 USD
View
A
Retailer 7
-
£922 GBP
$1,235 USD
View
A
Retailer 8
-
£948 GBP
$1,270 USD
View
B+
Retailer 9
-
£1,405 GBP
$1,882 USD
View
B+
Retailer 10
-
£1,633 GBP
$2,188 USD
View
B+
Retailer 11
-
£1,707 GBP
$2,287 USD
View
Retailer 12
-
£2,342 GBP
$3,138 USD
View
Price last confirmed 13 days ago
B
Retailer 13
-
£2,396 GBP
View
B
Retailer 14
-
£3,105 GBP
$4,160 USD
View
Most Expensive
B
Do Amore Diamonds
27-803759731 · Oct 29
£4,209 GBP
$5,640 USD
View
14 more retailers have this diamond
Prices start from £474 GBPSave up to £3,735 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
1.87ct Radiant
£474 GBP