Radiant|Lab Grown|IGI

1.89ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG836620963

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

Certificate IGI LG836620963

Diamond specifications and retailer prices

From £490 GBP
$656 USD
As of October 30, 2026
Save £2,809 GBP (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,429 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

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 LG836620963 or 836620963. Listed at 21 retailers as of October 30, 2026, with a 574% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle46.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620963
Dimensions8.37 × 6.21 × 4.22 mm
L/W Ratio1.35
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
8.37 mm6.21 mm1.89 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620963
Side View
Table 62.0%Crown 46.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.0%

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 30
Current: £3,429 GBP|Low: £490 GBP|High: £4,657 GBP|Avg: £1,574 GBP|-1.0%
Rare Carat
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
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 30, 2026
Retailer 11£490 GBP
Retailer 18£532 GBP
Retailer 10£568 GBP
Retailer 7£571 GBP
Retailer 14£702 GBP
Retailer 13£907 GBP
Retailer 16£925 GBP
Retailer 3£969 GBP
Retailer 19£1,034 GBP
Retailer 5£1,220 GBP
Retailer 4£1,320 GBP
Retailer 8£1,596 GBP
Retailer 6£1,763 GBP
Retailer 17£1,867 GBP
Retailer 12£1,958 GBP
Retailer 9£2,062 GBP
Retailer 20£2,182 GBP
Retailer 15£2,394 GBP
Retailer 2£3,299 GBP
Rare Carat£3,429 GBP

32 data points across 20 retailers

21 retailers£490 GBP to £3,299 GBP

A
Cheapest Retailer
-
£490 GBP
$656 USD
A
Retailer 2
-
£532 GBP
$713 USD
View
A
Retailer 3
-
£568 GBP
$761 USD
View
A
Retailer 4
-
£571 GBP
$765 USD
View
Final sale: no returns
Retailer 5
-
£606 GBP
$812 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£702 GBP
$940 USD
View
A
Retailer 7
-
£907 GBP
View
A
Retailer 8
-
£925 GBP
$1,239 USD
View
Retailer 9
-
£969 GBP
€1,236 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
£1,034 GBP
ZAR 22,372 ZAR
View
B+
Retailer 11
-
£1,220 GBP
$1,635 USD
View
B+
Retailer 12
-
£1,320 GBP
$1,769 USD
View
B+
Retailer 13
-
£1,596 GBP
$2,138 USD
View
B+
Retailer 14
-
£1,763 GBP
View
B+
Retailer 15
-
£1,867 GBP
$2,502 USD
View
B+
Retailer 16
-
£1,958 GBP
$2,624 USD
View
B+
Retailer 17
-
£2,062 GBP
SGD 3,733 SGD
View
B
Retailer 18
-
£2,182 GBP
$2,923 USD
View
B
Retailer 19
-
£2,394 GBP
View
B
Retailer 20
-
£3,299 GBP
$4,420 USD
View
Most Expensive
Rare Carat
PD-245485 · Oct 21
£3,429 GBP
$4,595 USD
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from £490 GBPSave up to £2,809 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
£490 GBP