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Oval|Lab Grown|IGI

1.56ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG696578945

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG696578945

Diamond specifications and retailer prices

From £148 GBP
$198 USD
As of October 29, 2026
Save £444 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £592 GBP at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG696578945 or 696578945. Listed at 11 retailers as of October 29, 2026, with prices from £148 to £592, a £444 spread on the same certified stone. Friendly Diamonds lists it at £592. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG696578945
Dimensions9.83 × 6.53 × 3.96 mm
L/W Ratio1.51
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.83 mm6.53 mm1.56 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG696578945
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.6%

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: £592 GBP|Low: £148 GBP|High: £1,142 GBP|Avg: £468 GBP
Friendly Diamonds
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 31, 2026
Retailer 9£148 GBP
Retailer 3£172 GBP
Retailer 10£184 GBP
Retailer 2£205 GBP
Retailer 13£210 GBP
Retailer 14£319 GBP
Retailer 8£336 GBP
Retailer 4£362 GBP
Retailer 11£377 GBP
Retailer 12£387 GBP
Retailer 15£590 GBP
Friendly Diamonds£592 GBP
Retailer 5£833 GBP
Retailer 6£863 GBP
Retailer 7£1,142 GBP

5 data points across 15 retailers

11 retailers£148 GBP to £592 GBP

A
Cheapest Retailer
-
£148 GBP
$198 USD
A
Retailer 2
-
£172 GBP
$230 USD
View
A
Retailer 3
-
£184 GBP
$246 USD
View
A
Retailer 4
-
£205 GBP
View
A
Retailer 5
-
£210 GBP
HK$2,200 HKD
View
B+
Retailer 6
-
£319 GBP
$428 USD
View
A
Retailer 7
-
£336 GBP
View
A
Retailer 8
-
£377 GBP
$505 USD
View
A
Retailer 9
-
£387 GBP
$519 USD
View
B
Retailer 10
-
£590 GBP
$790 USD
View
Most Expensive
B+
Friendly Diamonds
6554904 · Oct 31
£592 GBP
$793 USD
View
10 more retailers have this diamond
Prices start from £148 GBPSave up to £444 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
£148 GBP