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Round|Lab Grown|IGI

1.51ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG787639523

Certificate IGI LG787639523

Diamond specifications and retailer prices

From £856 GBP
$1,140 USD
As of October 28, 2026
Save £556 GBP (39%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,412 GBP at Jared · As of October 28, 2026
View at Jared

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG787639523 or 787639523. Listed at 3 retailers as of October 28, 2026, with prices from £856 to £1,412, a £556 spread on the same certified stone. Jared lists it at £1,412. 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

1.51
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG787639523
Dimensions7.30 × 7.34 mm
L/W Ratio1.01
Top View
7.30 mm7.34 mm1.51 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787639523
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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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: Oct 28
Current: £1,412 GBP|Low: £856 GBP|High: £1,412 GBP|Avg: £1,134 GBP
Jared
Retailer 2
Retailer 3
May 14, 2026
Retailer 2£856 GBP
Retailer 3£856 GBP
Jared£1,412 GBP

3 data points across 3 retailers

3 retailers£856 GBP to £1,412 GBP

B
Cheapest Retailer
-
£856 GBP
$1,140 USD
B
Retailer 2
-
£856 GBP
$1,140 USD
View
Most Expensive
B
Jared
158563872 · Oct 28
£1,412 GBP
$1,880 USD
View
2 more retailers have this diamond
Prices start from £856 GBPSave up to £556 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
1.51ct Round
£856 GBP