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Oval|Lab Grown|IGI

1.55ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG849656340

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG849656340

Diamond specifications and retailer prices

From £248 GBP
$332 USD
As of October 30, 2026
Save £384 GBP (61%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £632 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.55ct lab-grown oval diamond

This 1.55ct 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 LG849656340 or 849656340. Listed at 4 retailers as of October 30, 2026, with prices from £248 to £632, a £384 spread on the same certified stone. Taylor and Hart lists it at £632. 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

1.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849656340
Dimensions9.10 × 6.38 × 4.10 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.10 mm6.38 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849656340
Side View
Table 61.0%Crown 39.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
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 30
Current: £337 GBP|Low: £248 GBP|High: £632 GBP|Avg: £408 GBP
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
October 30, 2026
Retailer 3£248 GBP
Retailer 1£337 GBP
Retailer 2£383 GBP
Taylor and Hart£632 GBP

3 data points across 4 retailers

4 retailers£248 GBP to £632 GBP

B+
Cheapest Retailer
-
£248 GBP
$332 USD
A
Retailer 2
-
£337 GBP
View
B+
Retailer 3
-
£383 GBP
$513 USD
View
Most Expensive
B
Taylor and Hart
25O00RU · Oct 31
£632 GBP
$846 USD
View
3 more retailers have this diamond
Prices start from £248 GBPSave up to £384 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
1.55ct Oval
£248 GBP