CaratHunter
Plans
Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG660459214

Certificate IGI LG660459214

Diamond specifications and retailer prices

From £739 GBP
As of November 5, 2026
Save £695 GBP (48%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,434 GBP at Jared · As of November 4, 2026
View at Jared

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round 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 LG660459214 or 660459214. Listed at 4 retailers as of November 4, 2026, with prices from £739 to £1,434, a £695 spread on the same certified stone. Jared lists it at £1,434. 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
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459214
Dimensions7.47 × 7.51 × 4.52 mm
L/W Ratio1.01
Top View
7.47 mm7.51 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459214
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.4%

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 5
Current: £1,434 GBP|Low: £739 GBP|High: £1,434 GBP|Avg: £1,168 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2£739 GBP
Retailer 3£1,003 GBP
Retailer 4£1,003 GBP
Jared£1,434 GBP

10 data points across 4 retailers

4 retailers£739 GBP to £1,434 GBP

B
Cheapest Retailer
-
£739 GBP
B
Retailer 2
-
£1,003 GBP
View
B
Retailer 3
-
£1,003 GBP
View
Most Expensive
B
Jared
154541442 · Nov 4
£1,434 GBP
$1,930 USD
View
3 more retailers have this diamond
Prices start from £739 GBPSave up to £695 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.

B
1.55ct Round
£739 GBP