CaratHunter
Plans
Round|Lab Grown|IGI

1.81ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG712551704

Shape and cutting style on the report: Round brilliant

Certificate IGI LG712551704

Diamond specifications and retailer prices

From £513 GBP
$683 USD
As of October 29, 2026
Save £3,249 GBP (86%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,762 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round 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 LG712551704 or 712551704. Listed at 24 retailers as of October 29, 2026, with prices from £513 to £3,762, a £3,249 spread on the same certified stone. Brilliant Earth lists it at £3,762. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG712551704
Dimensions7.85 × 7.90 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
7.85 mm7.90 mm1.81 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG712551704
Side View
Table 57.0%Crown 33.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,762 GBP|Low: £558 GBP|High: £3,762 GBP|Avg: £1,375 GBP
Brilliant Earth
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
October 30, 2026
Retailer 6£558 GBP
Retailer 7£574 GBP
Retailer 10£728 GBP
Retailer 5£785 GBP
Retailer 2£950 GBP
Retailer 8£968 GBP
Retailer 3£969 GBP
Retailer 9£1,094 GBP
Retailer 12£1,481 GBP
Retailer 14£1,521 GBP
Retailer 15£1,926 GBP
Retailer 4£2,004 GBP
Retailer 13£2,058 GBP
Retailer 11£2,511 GBP
Brilliant Earth£3,762 GBP

44 data points across 15 retailers

24 retailers£513 GBP to £3,762 GBP

A
Cheapest Retailer
-
£513 GBP
$683 USD
A
Retailer 2
-
£558 GBP
$743 USD
View
A
Retailer 3
-
£574 GBP
$764 USD
View
Final sale: no returns
Retailer 4
-
£595 GBP
$793 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£595 GBP
$793 USD
View
A
Retailer 6
-
£692 GBP
HK$7,200 HKD
View
A
Retailer 7
-
£728 GBP
$970 USD
View
A
Retailer 8
-
£785 GBP
$1,046 USD
View
B+
Retailer 9
-
£950 GBP
View
B+
Retailer 10
-
£968 GBP
€1,228 EUR
View
B+
Retailer 11
-
£969 GBP
$1,291 USD
View
B+
Retailer 12
-
£1,001 GBP
$1,333 USD
View
B+
Retailer 13
-
£1,094 GBP
ZAR 23,537 ZAR
View
Retailer 14
-
£1,481 GBP
A$3,034 AUD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
£1,521 GBP
$2,025 USD
View
B
Retailer 16
-
£1,674 GBP
$2,229 USD
View
B+
Retailer 17
-
£1,926 GBP
$2,565 USD
View
B
Retailer 18
-
£2,004 GBP
SGD 3,607 SGD
View
B
Retailer 19
-
£2,031 GBP
$2,704 USD
View
B
Retailer 20
-
£2,053 GBP
$2,734 USD
View
B
Retailer 21
-
£2,054 GBP
$2,736 USD
View
B
Retailer 22
-
£2,058 GBP
$2,740 USD
View
B
Retailer 23
-
£2,511 GBP
View
Most Expensive
B
Brilliant Earth
19056412A · Oct 29
£3,762 GBP
$5,010 USD
View
23 more retailers have this diamond
Prices start from £513 GBPSave up to £3,249 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
1.81ct Round
£513 GBP