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Radiant|Lab Grown|IGI

1.70ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG818641530

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

Certificate IGI LG818641530

Diamond specifications and retailer prices

From £433 GBP
$580 USD
As of October 30, 2026
Save £3,411 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,844 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown radiant diamond

This 1.7ct 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 LG818641530 or 818641530. Listed at 12 retailers as of October 30, 2026, with prices from £433 to £3,844, a £3,411 spread on the same certified stone. Do Amore Diamonds lists it at £3,844. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818641530
Dimensions8.59 × 5.82 × 3.94 mm
L/W Ratio1.48
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
8.59 mm5.82 mm1.70 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818641530
Side View
Table 63.0%Crown 43.1°Girdle: MED-STKPavilion 33.4°Culet: NoneDepth 67.7%

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: £3,844 GBP|Low: £433 GBP|High: £4,926 GBP|Avg: £2,044 GBP|-15.7%
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
October 30, 2026
Retailer 7£433 GBP
Retailer 11£484 GBP
Retailer 3£646 GBP
Retailer 4£796 GBP
Retailer 8£825 GBP
Retailer 12£947 GBP
Retailer 9£1,331 GBP
Retailer 10£1,558 GBP
Retailer 6£2,347 GBP
Retailer 2£2,821 GBP
Retailer 13£3,008 GBP
Retailer 5£3,189 GBP
Do Amore Diamonds£3,844 GBP

29 data points across 13 retailers

12 retailers£433 GBP to £3,844 GBP

A
Cheapest Retailer
-
£433 GBP
$580 USD
A
Retailer 2
-
£484 GBP
$649 USD
View
A
Retailer 3
-
£646 GBP
$865 USD
View
A
Retailer 4
-
£796 GBP
$1,067 USD
View
A
Retailer 5
-
£825 GBP
$1,106 USD
View
Retailer 6
-
£947 GBP
€1,209 EUR
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£1,331 GBP
$1,784 USD
View
B+
Retailer 8
-
£1,558 GBP
$2,087 USD
View
B
Retailer 9
-
£2,347 GBP
View
B
Retailer 10
-
£2,821 GBP
$3,780 USD
View
B
Retailer 11
-
£3,008 GBP
$4,030 USD
View
Most Expensive
B
Do Amore Diamonds
27-8A72FBFBD · Oct 30
£3,844 GBP
$5,150 USD
View
11 more retailers have this diamond
Prices start from £433 GBPSave up to £3,411 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
1.70ct Radiant
£433 GBP