Oval|Lab Grown|IGI

1.55ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG762553792

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG762553792

Diamond specifications and retailer prices

From £918 GBP
$1,230 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: £918 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG762553792 or 762553792. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762553792
Dimensions9.49 × 6.58 × 3.97 mm
L/W Ratio1.44
Girdle conditionFaceted
Top View
9.49 mm6.58 mm1.55 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762553792
Side View
Table 60.0%Crown 34.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
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: Nov 2
Current: £918 GBP|Low: £408 GBP|High: £985 GBP|Avg: £668 GBP|-6.8%
Brilliant Earth
Retailer 2
February 6, 2026
Retailer 2£408 GBP
Brilliant Earth£918 GBP

7 data points across 2 retailers

1 retailer

B
Brilliant Earth
17212293A · Nov 2
£918 GBP
$1,230 USD
View

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
1.55ct Oval
£918 GBP