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Oval|Lab Grown|IGI

1.56ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG436046144

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436046144

Diamond specifications and retailer prices

From £642 GBP
$860 USD
As of October 31, 2026
Save £3,104 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,746 GBP at MOH London · As of November 1, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046144 or 436046144. Listed at 12 retailers as of October 31, 2026, with prices from £642 to £3,746, a £3,104 spread on the same certified stone. MOH London lists it at £3,746. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046144
Dimensions8.95 × 6.65 × 4.16 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.95 mm6.65 mm1.56 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046144
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.6%

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 31
Current: £3,746 GBP|Low: £642 GBP|High: £3,795 GBP|Avg: £1,713 GBP|-1.1%
MOH London
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
November 1, 2026
Retailer 7£642 GBP
Retailer 8£1,005 GBP
Retailer 12£1,093 GBP
Retailer 13£1,125 GBP
Retailer 9£1,166 GBP
Retailer 14£1,166 GBP
Retailer 3£1,295 GBP
Retailer 5£1,601 GBP
Retailer 2£1,665 GBP
Retailer 10£1,842 GBP
Retailer 4£2,173 GBP
Retailer 11£2,185 GBP
Retailer 6£3,337 GBP
MOH London£3,746 GBP

38 data points across 14 retailers

12 retailers£642 GBP to £3,746 GBP

A
Cheapest Retailer
-
£642 GBP
$860 USD
A
Retailer 2
-
£1,005 GBP
$1,347 USD
View
B+
Retailer 3
-
£1,093 GBP
$1,465 USD
View
B+
Retailer 4
-
£1,125 GBP
$1,508 USD
View
Final sale: no returns
Retailer 5
-
£1,166 GBP
$1,562 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
£1,166 GBP
$1,562 USD
View
B+
Retailer 7
-
£1,295 GBP
$1,735 USD
View
B+
Retailer 8
-
£1,665 GBP
View
B
Retailer 9
-
£1,842 GBP
$2,468 USD
View
B
Retailer 10
-
£2,173 GBP
$2,911 USD
View
B
Retailer 11
-
£2,185 GBP
$2,928 USD
View
Most Expensive
B
MOH London
LG436046144 · Nov 1
£3,746 GBP
View
11 more retailers have this diamond
Prices start from £642 GBPSave up to £3,104 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
£642 GBP