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Round|Lab Grown|IGI

1.35ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG570364475

Shape and cutting style on the report: Round brilliant

Certificate IGI LG570364475

Diamond specifications and retailer prices

From £126 GBP
$169 USD
As of October 29, 2026
Save £1,090 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,217 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.35ct lab-grown round diamond

This 1.35ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG570364475 or 570364475. Listed at 9 retailers as of October 29, 2026, with prices from £126 to £1,217, a £1,090 spread on the same certified stone. Do Amore Diamonds lists it at £1,217. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.35
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570364475
Dimensions7.11 × 7.09 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.11 mm7.09 mm1.35 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570364475
Side View
Table 57.5%Crown 33.9°Girdle: Med.Pavilion 40.6°Culet: NoneDepth 61.0%

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: £1,217 GBP|Low: £102 GBP|High: £1,217 GBP|Avg: £479 GBP|+2.5%
Do Amore 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
October 25, 2026
Retailer 9£126 GBP
Retailer 13£140 GBP
Retailer 7£147 GBP
Retailer 12£281 GBP
Retailer 5£312 GBP
Retailer 10£377 GBP
Retailer 14£380 GBP
Retailer 6£394 GBP
Retailer 3£507 GBP
Retailer 8£532 GBP
Retailer 11£556 GBP
Retailer 4£582 GBP
Retailer 2£810 GBP
Do Amore Diamonds£1,217 GBP

18 data points across 14 retailers

9 retailers£126 GBP to £1,217 GBP

A
Cheapest Retailer
-
£126 GBP
$169 USD
A
Retailer 2
-
£140 GBP
$188 USD
View
Final sale: no returns
A
Retailer 3
-
£147 GBP
$197 USD
View
B+
Retailer 4
-
£281 GBP
$377 USD
View
B+
Retailer 5
-
£377 GBP
$505 USD
View
B
Retailer 6
-
£532 GBP
$713 USD
View
B
Retailer 7
-
£556 GBP
$745 USD
View
B
Retailer 8
-
£810 GBP
View
Most Expensive
B
Do Amore Diamonds
27-64ED0E524 · Oct 29
£1,217 GBP
$1,630 USD
View
8 more retailers have this diamond
Prices start from £126 GBPSave up to £1,090 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
1.35ct Round
£126 GBP