CaratHunter
Plans
Round|Lab Grown|IGI

17.10ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG586343084

Shape and cutting style on the report: Round brilliant

Certificate IGI LG586343084

Diamond specifications and retailer prices

From £4,257 GBP
$5,704 USD
As of October 29, 2026
Save £15,095 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £19,352 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 17.1ct lab-grown round diamond

This 17.1ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG586343084 or 586343084. Listed at 11 retailers as of October 29, 2026, with prices from £4,257 to £19,352, a £15,095 spread on the same certified stone. Brilliant Earth lists it at £19,352. 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

17.10
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG586343084
Dimensions16.76 × 16.69 × 10.11 mm
L/W Ratio1.00
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
16.76 mm16.69 mm17.10 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG586343084
Side View
Table 57.0%Crown 33.9°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.5%

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: £19,352 GBP|Low: £4,087 GBP|High: £36,697 GBP|Avg: £10,151 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 10£4,257 GBP
Retailer 2£4,378 GBP
Retailer 12£4,462 GBP
Retailer 14£4,769 GBP
Retailer 3£5,071 GBP
Retailer 9£5,975 GBP
Retailer 8£5,978 GBP
Retailer 13£6,471 GBP
Retailer 5£6,592 GBP
Retailer 11£7,625 GBP
Retailer 15£8,629 GBP
Retailer 4£13,218 GBP
Retailer 7£16,460 GBP
Brilliant Earth£19,352 GBP
Retailer 6£36,697 GBP

40 data points across 15 retailers

11 retailers£4,257 GBP to £19,352 GBP

A
Cheapest Retailer
-
£4,257 GBP
$5,704 USD
A
Retailer 2
-
£4,378 GBP
View
B+
Retailer 3
-
£4,462 GBP
$5,978 USD
View
B+
Retailer 4
-
£4,769 GBP
$6,390 USD
View
Final sale: no returns
B+
Retailer 5
-
£5,975 GBP
$8,006 USD
View
B+
Retailer 6
-
£5,978 GBP
$8,010 USD
View
B+
Retailer 7
-
£6,471 GBP
$8,671 USD
View
B+
Retailer 8
-
£6,592 GBP
HK$69,000 HKD
View
B
Retailer 9
-
£7,625 GBP
$10,217 USD
View
B
Retailer 10
-
£13,218 GBP
$17,710 USD
View
Most Expensive
B
Brilliant Earth
15272544Y · Oct 31
£19,352 GBP
$25,930 USD
View
10 more retailers have this diamond
Prices start from £4,257 GBPSave up to £15,095 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
17.10ct Round
£4,257 GBP