CaratHunter
Plans
Round|Lab Grown|IGI

1.31ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG836619328

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836619328

Diamond specifications and retailer prices

From £206 GBP
$276 USD
As of October 29, 2026
Save £1,496 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,702 GBP at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1.31ct lab-grown round diamond

This 1.31ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836619328 or 836619328. Listed at 22 retailers as of October 29, 2026, with prices from £206 to £1,702, a £1,496 spread on the same certified stone. Helzberg Diamonds lists it at £1,702. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619328
Dimensions7.00 × 7.06 × 4.35 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
7.00 mm7.06 mm1.31 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619328
Side View
Table 56.0%Crown 34.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.9%

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: £1,702 GBP|Low: £203 GBP|High: £1,702 GBP|Avg: £639 GBP
Helzberg 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 30, 2026
Retailer 9£206 GBP
Retailer 10£231 GBP
Retailer 4£239 GBP
Retailer 5£255 GBP
Retailer 12£255 GBP
Retailer 3£399 GBP
Retailer 2£413 GBP
Retailer 16£418 GBP
Retailer 6£422 GBP
Retailer 18£439 GBP
Retailer 7£444 GBP
Retailer 13£448 GBP
Retailer 8£567 GBP
Retailer 20£676 GBP
Retailer 22£784 GBP
Retailer 21£820 GBP
Retailer 14£821 GBP
Retailer 11£859 GBP
Retailer 17£1,028 GBP
Retailer 19£1,064 GBP
Retailer 15£1,463 GBP
Helzberg Diamonds£1,702 GBP

25 data points across 22 retailers

22 retailers£206 GBP to £1,702 GBP

A
Cheapest Retailer
-
£206 GBP
$276 USD
A
Retailer 2
-
£231 GBP
$309 USD
View
Final sale: no returns
A
Retailer 3
-
£239 GBP
$320 USD
View
A
Retailer 4
-
£255 GBP
$342 USD
View
A
Retailer 5
-
£255 GBP
$342 USD
View
A
Retailer 6
-
£399 GBP
$535 USD
View
A
Retailer 7
-
£413 GBP
View
A
Retailer 8
-
£418 GBP
€534 EUR
View
A
Retailer 9
-
£422 GBP
$566 USD
View
A
Retailer 10
-
£439 GBP
ZAR 9,496 ZAR
View
A
Retailer 11
-
£444 GBP
$595 USD
View
A
Retailer 12
-
£448 GBP
View
A
Retailer 13
-
£567 GBP
$760 USD
View
B+
Retailer 14
-
£676 GBP
$906 USD
View
B+
Retailer 15
-
£784 GBP
$1,051 USD
View
B+
Retailer 16
-
£820 GBP
SGD 1,485 SGD
View
B+
Retailer 17
-
£821 GBP
$1,100 USD
View
B+
Retailer 18
-
£859 GBP
$1,150 USD
View
B+
Retailer 19
-
£1,028 GBP
View
B+
Retailer 20
-
£1,064 GBP
$1,425 USD
View
B
Retailer 21
-
£1,463 GBP
$1,960 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJMMHPJIO · Oct 29
£1,702 GBP
$2,281 USD
View
21 more retailers have this diamond
Prices start from £206 GBPSave up to £1,496 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
1.31ct Round
£206 GBP