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Radiant|Lab Grown|IGI

1.70ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG726542816

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

Certificate IGI LG726542816

Diamond specifications and retailer prices

From £234 GBP
$312 USD
As of October 30, 2026
Save £2,341 GBP (91%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,576 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG726542816 or 726542816. Listed at 10 retailers as of October 29, 2026, with prices from £234 to £2,576, a £2,341 spread on the same certified stone. Brilliant Earth lists it at £2,576. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726542816
Dimensions8.46 × 5.96 × 3.91 mm
L/W Ratio1.42
Culet sizePointed
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
8.46 mm5.96 mm1.70 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726542816
Side View
Table 64.0%Crown 42.6°Girdle: MED-STKPavilion 34.5°Culet: NoneDepth 65.6%

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: £2,576 GBP|Low: £234 GBP|High: £2,576 GBP|Avg: £1,015 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6£234 GBP
Retailer 4£394 GBP
Retailer 5£419 GBP
Retailer 2£459 GBP
Retailer 7£839 GBP
Retailer 8£915 GBP
Retailer 3£1,049 GBP
Retailer 9£2,001 GBP
Brilliant Earth£2,576 GBP

43 data points across 9 retailers

10 retailers£234 GBP to £2,576 GBP

A
Cheapest Retailer
-
£234 GBP
$312 USD
Final sale: no returns
A
Retailer 2
-
£394 GBP
$525 USD
View
A
Retailer 3
-
£419 GBP
€532 EUR
View
A
Retailer 4
-
£459 GBP
View
A
Retailer 5
-
£839 GBP
SGD 1,509 SGD
View
B+
Retailer 6
-
£915 GBP
$1,218 USD
View
B+
Retailer 7
-
£964 GBP
$1,284 USD
View
B+
Retailer 8
-
£1,049 GBP
View
Retailer 9
-
£2,001 GBP
$2,665 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
15975265A · Oct 29
£2,576 GBP
$3,430 USD
View
9 more retailers have this diamond
Prices start from £234 GBPSave up to £2,341 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
£234 GBP