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Oval|Lab Grown|IGI

1.56ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG625447976

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG625447976

Diamond specifications and retailer prices

From £140 GBP
$186 USD
As of October 29, 2026
Save £671 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £811 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.56ct lab-grown oval diamond

This 1.56ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG625447976 or 625447976. Listed at 14 retailers as of October 29, 2026, with prices from £140 to £811, a £671 spread on the same certified stone. Brilliant Earth lists it at £811. 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

1.56
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625447976
Dimensions9.69 × 6.47 × 4.02 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Top View
9.69 mm6.47 mm1.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625447976
Side View
Table 59.0%Crown 35.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £811 GBP|Low: £134 GBP|High: £841 GBP|Avg: £401 GBP|-3.6%
Brilliant Earth
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
October 30, 2026
Retailer 6£140 GBP
Retailer 9£161 GBP
Retailer 3£173 GBP
Retailer 14£173 GBP
Retailer 13£222 GBP
Retailer 4£305 GBP
Retailer 2£313 GBP
Retailer 11£326 GBP
Retailer 12£357 GBP
Retailer 15£425 GBP
Retailer 5£556 GBP
Retailer 7£587 GBP
Retailer 10£680 GBP
Retailer 8£810 GBP
Brilliant Earth£811 GBP

39 data points across 15 retailers

14 retailers£140 GBP to £811 GBP

A
Cheapest Retailer
-
£140 GBP
$186 USD
A
Retailer 2
-
£161 GBP
$215 USD
View
A
Retailer 3
-
£173 GBP
$230 USD
View
A
Retailer 4
-
£173 GBP
$230 USD
View
Retailer 5
-
£222 GBP
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£305 GBP
$406 USD
View
A
Retailer 7
-
£313 GBP
View
A
Retailer 8
-
£357 GBP
$475 USD
View
B+
Retailer 9
-
£425 GBP
$566 USD
View
B+
Retailer 10
-
£556 GBP
$740 USD
View
B
Retailer 11
-
£587 GBP
$782 USD
View
B
Retailer 12
-
£680 GBP
$905 USD
View
B
Retailer 13
-
£810 GBP
View
Most Expensive
B
Brilliant Earth
9465956A · Oct 29
£811 GBP
$1,080 USD
View
13 more retailers have this diamond
Prices start from £140 GBPSave up to £671 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
1.56ct Oval
£140 GBP