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Radiant|Lab Grown|IGI

1.91ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG712553185

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

Certificate IGI LG712553185

Diamond specifications and retailer prices

From £342 GBP
$458 USD
As of October 30, 2026
Save £3,397 GBP (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,739 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.91ct lab-grown radiant diamond

This 1.91ct 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 very-good cut grade and certified by IGI LG712553185 or 712553185. Listed at 24 retailers as of October 29, 2026, with prices from £342 to £3,739, a £3,397 spread on the same certified stone. Brilliant Earth lists it at £3,739. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.91
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG712553185
Dimensions9.46 × 6.11 × 3.81 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.46 mm6.11 mm1.91 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG712553185
Side View
Table 58.0%Crown 38.9°Girdle: MediumPavilion 30.9°Culet: NoneDepth 62.4%

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: £3,739 GBP|Low: £342 GBP|High: £3,851 GBP|Avg: £1,221 GBP|-2.9%
Brilliant Earth
Retailer 2
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Retailer 21
October 30, 2026
Retailer 3£342 GBP
Retailer 9£382 GBP
Retailer 21£382 GBP
Retailer 4£423 GBP
Retailer 16£530 GBP
Retailer 18£641 GBP
Retailer 7£668 GBP
Retailer 20£683 GBP
Retailer 2£701 GBP
Retailer 15£766 GBP
Retailer 19£985 GBP
Retailer 8£1,201 GBP
Retailer 11£1,345 GBP
Retailer 6£1,361 GBP
Retailer 12£1,385 GBP
Retailer 14£1,478 GBP
Retailer 10£1,504 GBP
Retailer 13£1,564 GBP
Retailer 5£1,584 GBP
Retailer 17£2,232 GBP
Brilliant Earth£3,739 GBP

35 data points across 21 retailers

24 retailers£342 GBP to £3,739 GBP

A
Cheapest Retailer
-
£342 GBP
$458 USD
A
Retailer 2
-
£382 GBP
$512 USD
View
Final sale: no returns
A
Retailer 3
-
£382 GBP
$512 USD
View
Retailer 4
-
£423 GBP
$567 USD
View
Price last confirmed 14 days ago
A
Retailer 5
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£423 GBP
$567 USD
View
A
Retailer 6
-
£530 GBP
$710 USD
View
A
Retailer 7
-
£641 GBP
€818 EUR
View
A
Retailer 8
-
£668 GBP
$895 USD
View
A
Retailer 9
-
£683 GBP
$915 USD
View
A
Retailer 10
-
£701 GBP
View
A
Retailer 11
-
£766 GBP
A$1,578 AUD
View
B+
Retailer 12
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£985 GBP
$1,320 USD
View
B+
Retailer 13
-
£1,201 GBP
$1,609 USD
View
B+
Retailer 14
-
£1,345 GBP
SGD 2,436 SGD
View
B+
Retailer 15
-
£1,361 GBP
$1,824 USD
View
B+
Retailer 16
-
£1,385 GBP
$1,855 USD
View
B+
Retailer 17
-
£1,416 GBP
$1,897 USD
View
Retailer 18
-
£1,478 GBP
A$3,047 AUD
View
Price last confirmed 25 days ago
B
Retailer 19
-
£1,504 GBP
$2,016 USD
View
B
Retailer 20
-
£1,564 GBP
View
B
Retailer 21
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£1,584 GBP
$2,123 USD
View
Retailer 22
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£2,199 GBP
$2,947 USD
View
Price last confirmed 37 days ago
Retailer 23
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£2,232 GBP
$2,990 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
15446547A · Oct 29
£3,739 GBP
$5,010 USD
View
23 more retailers have this diamond
Prices start from £342 GBPSave up to £3,397 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
1.91ct Radiant
£342 GBP