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Radiant|Lab Grown|IGI

1.89ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG830625280

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

Certificate IGI LG830625280

Diamond specifications and retailer prices

From £479 GBP
$642 USD
As of October 30, 2026
Save £3,775 GBP (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,254 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.89ct lab-grown radiant diamond

This 1.89ct 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 LG830625280 or 830625280. Listed at 16 retailers as of October 29, 2026, with prices from £479 to £4,254, a £3,775 spread on the same certified stone. Do Amore Diamonds lists it at £4,254. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830625280
Dimensions9.11 × 6.18 × 3.97 mm
L/W Ratio1.47
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
9.11 mm6.18 mm1.89 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830625280
Side View
Table 58.0%Crown 40.1°Girdle: ThickPavilion 33.1°Culet: NoneDepth 64.2%

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 30
Current: £4,254 GBP|Low: £479 GBP|High: £4,665 GBP|Avg: £1,795 GBP
Do Amore Diamonds
Retailer 2
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Retailer 18
October 30, 2026
Retailer 14£479 GBP
Retailer 6£521 GBP
Retailer 17£682 GBP
Retailer 13£709 GBP
Retailer 16£907 GBP
Retailer 3£966 GBP
Retailer 7£1,016 GBP
Retailer 12£1,035 GBP
Retailer 18£1,420 GBP
Retailer 5£1,648 GBP
Retailer 4£1,724 GBP
Retailer 8£2,083 GBP
Retailer 9£2,291 GBP
Retailer 11£2,421 GBP
Retailer 15£2,690 GBP
Retailer 2£3,142 GBP
Retailer 10£3,463 GBP
Do Amore Diamonds£4,254 GBP

34 data points across 18 retailers

16 retailers£479 GBP to £4,254 GBP

A
Cheapest Retailer
-
£479 GBP
$642 USD
A
Retailer 2
-
£521 GBP
$698 USD
View
A
Retailer 3
-
£682 GBP
$914 USD
View
A
Retailer 4
-
£709 GBP
$950 USD
View
A
Retailer 5
-
£907 GBP
$1,215 USD
View
A
Retailer 6
-
£931 GBP
$1,248 USD
View
A
Retailer 7
-
£966 GBP
$1,295 USD
View
B+
Retailer 8
-
£1,420 GBP
$1,902 USD
View
B+
Retailer 9
-
£1,648 GBP
$2,208 USD
View
B+
Retailer 10
-
£1,724 GBP
$2,310 USD
View
Retailer 11
-
£2,083 GBP
$2,791 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
£2,421 GBP
View
B
Retailer 13
-
£2,690 GBP
$3,604 USD
View
B
Retailer 14
-
£3,142 GBP
$4,210 USD
View
Retailer 15
-
£3,463 GBP
$4,640 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Do Amore Diamonds
27-66D4CD1D2 · Oct 29
£4,254 GBP
$5,700 USD
View
15 more retailers have this diamond
Prices start from £479 GBPSave up to £3,775 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
1.89ct Radiant
£479 GBP