CaratHunter
Plans
Round|Lab Grown|IGI

1.00ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG825639558

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825639558

Diamond specifications and retailer prices

From £174 GBP
$233 USD
As of October 29, 2026
Save £752 GBP (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £925 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825639558 or 825639558. Listed at 18 retailers as of October 29, 2026, with prices from £174 to £925, a £752 spread on the same certified stone. Brilliant Earth lists it at £925. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825639558
Dimensions6.38 × 6.43 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.38 mm6.43 mm1.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825639558
Side View
Table 56.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.2%

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: £925 GBP|Low: £174 GBP|High: £925 GBP|Avg: £403 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
Retailer 16
Retailer 17
October 30, 2026
Retailer 13£174 GBP
Retailer 17£194 GBP
Retailer 10£202 GBP
Retailer 7£216 GBP
Retailer 8£217 GBP
Retailer 9£239 GBP
Retailer 3£291 GBP
Retailer 11£350 GBP
Retailer 14£361 GBP
Retailer 5£371 GBP
Retailer 16£389 GBP
Retailer 12£407 GBP
Retailer 4£582 GBP
Retailer 6£694 GBP
Retailer 2£696 GBP
Retailer 15£870 GBP
Brilliant Earth£925 GBP

23 data points across 17 retailers

18 retailers£174 GBP to £925 GBP

A
Cheapest Retailer
-
£174 GBP
$233 USD
A
Retailer 2
-
£194 GBP
$260 USD
View
Final sale: no returns
A
Retailer 3
-
£202 GBP
$271 USD
View
A
Retailer 4
-
£216 GBP
$289 USD
View
A
Retailer 5
-
£217 GBP
$291 USD
View
A
Retailer 6
-
£239 GBP
HK$2,500 HKD
View
A
Retailer 7
-
£291 GBP
$390 USD
View
A
Retailer 8
-
£350 GBP
View
A
Retailer 9
-
£361 GBP
€461 EUR
View
A
Retailer 10
-
£371 GBP
ZAR 8,030 ZAR
View
A
Retailer 11
-
£389 GBP
$521 USD
View
B+
Retailer 12
-
£407 GBP
View
B+
Retailer 13
-
£582 GBP
SGD 1,054 SGD
View
B+
Retailer 14
-
£694 GBP
$930 USD
View
B
Retailer 15
-
£696 GBP
$933 USD
View
Retailer 16
-
£750 GBP
$1,005 USD
View
Price last confirmed 27 days ago
B
Retailer 17
-
£870 GBP
View
Most Expensive
B
Brilliant Earth
21294682A · Oct 30
£925 GBP
$1,240 USD
View
17 more retailers have this diamond
Prices start from £174 GBPSave up to £752 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
1.00ct Round
£174 GBP