CaratHunter
Plans
Round|Lab Grown|GIA

3.55ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 1488082996

Certificate GIA 1488082996

Diamond specifications and retailer prices

From £886 GBP
$1,180 USD
As of October 29, 2026
Save £2,538 GBP (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,424 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.55ct lab-grown round diamond

This 3.55ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1488082996. Listed at 5 retailers as of October 29, 2026, with prices from £886 to £3,424, a £2,538 spread on the same certified stone. Brilliant Earth lists it at £3,424. 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

3.55
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 1488082996
Dimensions9.88 × 9.85 × 5.94 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Girdle conditionFaceted
Cert comments
This is a man-made diamond produced by CVD (Chemical Vapor Deposition) growth process and has evidence of post-growth treatments to change the color.
Key to symbols
Growth Remnant
Top View
9.88 mm9.85 mm3.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1488082996
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,424 GBP|Low: £886 GBP|High: £3,612 GBP|Avg: £2,159 GBP|-5.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4£886 GBP
Retailer 2£1,433 GBP
Retailer 3£3,276 GBP
Brilliant Earth£3,424 GBP

15 data points across 4 retailers

5 retailers£886 GBP to £3,424 GBP

A
Cheapest Retailer
-
£886 GBP
$1,180 USD
Final sale: no returns
B+
Retailer 2
-
£1,433 GBP
View
B
Retailer 3
-
£1,901 GBP
$2,532 USD
View
B
Retailer 4
-
£3,276 GBP
View
Most Expensive
B
Brilliant Earth
8686683A · Oct 29
£3,424 GBP
$4,560 USD
View
4 more retailers have this diamond
Prices start from £886 GBPSave up to £2,538 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
3.55ct Round
£886 GBP