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Round|Lab Grown|IGI

3.58ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG591375823

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591375823

Diamond specifications and retailer prices

From £307 GBP
$412 USD
As of October 26, 2026
Save £2,424 GBP (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,732 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.58ct lab-grown round diamond

This 3.58ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591375823 or 591375823. Listed at 10 retailers as of October 26, 2026, with prices from £307 to £2,732, a £2,424 spread on the same certified stone. Do Amore Diamonds lists it at £2,732. 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

3.58
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591375823
Dimensions9.87 × 9.82 × 6.04 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.87 mm9.82 mm3.58 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591375823
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.3%

Caratlytics Score

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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 26
Current: £2,732 GBP|Low: £307 GBP|High: £2,829 GBP|Avg: £1,129 GBP|-3.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 12£307 GBP
Retailer 7£345 GBP
Retailer 10£603 GBP
Retailer 6£605 GBP
Retailer 5£748 GBP
Retailer 3£767 GBP
Retailer 4£792 GBP
Retailer 11£974 GBP
Retailer 8£1,069 GBP
Retailer 9£1,353 GBP
Retailer 2£1,554 GBP
Retailer 13£1,851 GBP
Do Amore Diamonds£2,732 GBP

22 data points across 13 retailers

10 retailers£307 GBP to £2,732 GBP

A
Cheapest Retailer
-
£307 GBP
$412 USD
A
Retailer 2
-
£345 GBP
$462 USD
View
B+
Retailer 3
-
£603 GBP
$808 USD
View
A
Retailer 4
-
£605 GBP
$810 USD
View
B+
Retailer 5
-
£974 GBP
$1,305 USD
View
B
Retailer 6
-
£1,069 GBP
$1,433 USD
View
B
Retailer 7
-
£1,353 GBP
$1,813 USD
View
B
Retailer 8
-
£1,554 GBP
View
B
Retailer 9
-
£1,851 GBP
$2,480 USD
View
Most Expensive
B
Do Amore Diamonds
27-4662990B2 · Oct 29
£2,732 GBP
$3,660 USD
View
9 more retailers have this diamond
Prices start from £307 GBPSave up to £2,424 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
3.58ct Round
£307 GBP