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Round|Lab Grown|IGI

0.70ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG459191421

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459191421

Diamond specifications and retailer prices

From £388 GBP
$520 USD
As of October 31, 2026
Save £563 GBP (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,509 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.7ct lab-grown round diamond

This 0.7ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG459191421 or 459191421. Listed at 12 retailers as of October 31, 2026, with a 145% 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

0.70
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459191421
Dimensions5.64 × 5.71 × 3.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.64 mm5.71 mm0.70 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG459191421
Side View
Table 59.5%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,261 GBP|Low: £370 GBP|High: £2,288 GBP|Avg: £847 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7£388 GBP
Retailer 6£463 GBP
Retailer 2£518 GBP
Retailer 10£518 GBP
Retailer 8£574 GBP
Retailer 9£878 GBP
Retailer 3£896 GBP
Retailer 4£951 GBP
Retailer 5£1,423 GBP
Retailer 1£2,261 GBP

43 data points across 10 retailers

12 retailers£388 GBP to £951 GBP

B+
Cheapest Retailer
-
£388 GBP
$520 USD
B
Retailer 2
-
£463 GBP
$620 USD
View
B
Retailer 3
-
£518 GBP
$694 USD
View
Final sale: no returns
B
Retailer 4
-
£518 GBP
$694 USD
View
B
Retailer 5
-
£574 GBP
$769 USD
View
Retailer 6
-
£574 GBP
$769 USD
View
Price last confirmed 16 days ago
B
Retailer 7
-
£878 GBP
$1,177 USD
View
B
Retailer 8
-
£896 GBP
View
B
Retailer 9
-
£951 GBP
€1,214 EUR
View
Retailer 10
-
£1,423 GBP
$1,907 USD
View
Price under review
Most Expensive
NZ Jewellers
496330bb-3bef-4873-b6a0-b3348ff73598 · Oct 30
£1,509 GBP
$2,022 USD
View
Price under review
10 more retailers have this diamond
Prices start from £388 GBPSave up to £563 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+
0.70ct Round
£388 GBP