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Round|Lab Grown

0.45ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • 1181770

Diamond specifications and retailer prices

From £59 GBP
As of November 5, 2026
Save £186 GBP (76%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £245 GBP at B2C Jewels · As of November 4, 2026
View at B2C Jewels

About this 0.45ct lab-grown round diamond

This 0.45ct lab-grown round sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade. Listed at 4 retailers as of November 4, 2026, with prices from £59 to £245, a £186 spread on the same certified stone. B2C Jewels lists it at £245. 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

0.45
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading Lab
Certificate1181770
Dimensions4.98 × 4.94 × 3.05 mm
L/W Ratio1.01
Top View
4.98 mm4.94 mm0.45 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Certificate1181770
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.4%

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: Nov 5
Current: £245 GBP|Low: £59 GBP|High: £275 GBP|Avg: £178 GBP
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4£59 GBP
Retailer 3£68 GBP
Retailer 2£78 GBP
Retailer 7£143 GBP
Retailer 5£235 GBP
B2C Jewels£245 GBP
Retailer 6£275 GBP

4 data points across 7 retailers

4 retailers£59 GBP to £245 GBP

A
Cheapest Retailer
-
£59 GBP
B+
Retailer 2
-
£68 GBP
View
B+
Retailer 3
-
£78 GBP
View
Most Expensive
B
B2C Jewels
37385102 · Nov 4
£245 GBP
$330 USD
View
3 more retailers have this diamond
Prices start from £59 GBPSave up to £186 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
0.45ct Round
£59 GBP