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Radiant|Lab Grown|IGI

1.69ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG818681523

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

Certificate IGI LG818681523

Diamond specifications and retailer prices

From £642 GBP
$860 USD
As of October 29, 2026
Save £3,179 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,821 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.69ct lab-grown radiant diamond

This 1.69ct 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 LG818681523 or 818681523. Listed at 13 retailers as of October 29, 2026, with prices from £642 to £3,821, a £3,179 spread on the same certified stone. Do Amore Diamonds lists it at £3,821. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.69
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681523
Dimensions8.40 × 5.99 × 3.85 mm
L/W Ratio1.40
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
8.40 mm5.99 mm1.69 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681523
Side View
Table 60.0%Crown 41.3°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 64.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £3,821 GBP|Low: £586 GBP|High: £4,165 GBP|Avg: £1,915 GBP
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
October 30, 2026
Retailer 8£642 GBP
Retailer 11£788 GBP
Retailer 9£820 GBP
Retailer 6£914 GBP
Retailer 12£932 GBP
Retailer 10£1,324 GBP
Retailer 3£1,863 GBP
Retailer 4£2,049 GBP
Retailer 5£2,334 GBP
Retailer 2£2,799 GBP
Retailer 7£3,008 GBP
Do Amore Diamonds£3,821 GBP

29 data points across 12 retailers

13 retailers£642 GBP to £3,821 GBP

Retailer 1
-
£464 GBP
$622 USD
Price last confirmed 14 days ago
Retailer 2
-
£519 GBP
$696 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£642 GBP
$860 USD
View
A
Retailer 4
-
£788 GBP
$1,056 USD
View
A
Retailer 5
-
£820 GBP
$1,099 USD
View
A
Retailer 6
-
£822 GBP
$1,102 USD
View
B+
Retailer 7
-
£1,324 GBP
$1,774 USD
View
Retailer 8
-
£1,514 GBP
$2,028 USD
View
Price last confirmed 14 days ago
Retailer 9
-
£1,863 GBP
$2,496 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
£2,334 GBP
View
B
Retailer 11
-
£2,799 GBP
$3,750 USD
View
B
Retailer 12
-
£3,008 GBP
$4,030 USD
View
Most Expensive
B
Do Amore Diamonds
27-BD2841531 · Oct 29
£3,821 GBP
$5,120 USD
View
12 more retailers have this diamond
Prices start from £642 GBPSave up to £3,179 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
1.69ct Radiant
£642 GBP