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Round|Lab Grown|IGI

1.01ct E SI2 Round Lab Grown Diamond

EX • E/SI2 • IGI LG472170770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472170770

Diamond specifications and retailer prices

From £485 GBP
As of November 5, 2026
Save £432 GBP (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,583 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct lab-grown round diamond

This 1.01ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170770 or 472170770. Listed at 11 retailers as of November 4, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170770
Dimensions6.47 × 6.44 × 3.87 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.47 mm6.44 mm1.01 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170770
Side View
Table 61.5%Crown 35.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,583 GBP|Low: £466 GBP|High: £2,399 GBP|Avg: £963 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£485 GBP
Retailer 10£528 GBP
Retailer 9£543 GBP
Retailer 7£563 GBP
Retailer 6£572 GBP
Retailer 2£888 GBP
Retailer 8£918 GBP
Retailer 4£1,438 GBP
NZ Jewellers£1,583 GBP
Retailer 3£2,371 GBP

42 data points across 10 retailers

11 retailers£485 GBP to £918 GBP

B
Cheapest Retailer
-
£485 GBP
B
Retailer 2
-
£528 GBP
View
B
Retailer 3
-
£543 GBP
View
Final sale: no returns
Retailer 4
-
£563 GBP
View
Price last confirmed 21 days ago
B
Retailer 5
-
£563 GBP
View
B
Retailer 6
-
£572 GBP
View
B
Retailer 7
-
£888 GBP
View
B
Retailer 8
-
£918 GBP
View
Retailer 9
-
£1,438 GBP
View
Price under review
Most Expensive
NZ Jewellers
b0cbbe8d-6393-4ad0-8f32-2bca394cca53 · Nov 5
£1,583 GBP
$2,130 USD
View
Price under review
9 more retailers have this diamond
Prices start from £485 GBPSave up to £432 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.

B
1.01ct Round
£485 GBP