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Round|Lab Grown|IGI

1.62ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG11902215

Shape and cutting style on the report: Round brilliant

Certificate IGI LG11902215

Diamond specifications and retailer prices

From £303 GBP
$407 USD
As of November 1, 2026
Save £1,140 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,400 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.62ct lab-grown round diamond

This 1.62ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG11902215 or 11902215. Listed at 12 retailers as of November 1, 2026, with a 376% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.62
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG11902215
Dimensions7.51 × 7.55 × 4.69 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.51 mm7.55 mm1.62 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG11902215
Side View
Table 58.5%Crown 35.5°Girdle: MED-UNDPavilion 41.5°Culet: NoneDepth 62.2%

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: Nov 1
Current: £2,400 GBP|Low: £303 GBP|High: £2,400 GBP|Avg: £867 GBP
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
November 3, 2026
Retailer 8£303 GBP
Retailer 7£343 GBP
Retailer 10£447 GBP
Retailer 2£605 GBP
Retailer 12£611 GBP
Retailer 4£661 GBP
Retailer 5£678 GBP
Retailer 9£981 GBP
Retailer 11£1,063 GBP
Retailer 3£1,301 GBP
Retailer 6£1,443 GBP
Do Amore Diamonds£2,400 GBP

17 data points across 12 retailers

12 retailers£303 GBP to £1,443 GBP

A
Cheapest Retailer
-
£303 GBP
$407 USD
B+
Retailer 2
-
£343 GBP
$460 USD
View
B+
Retailer 3
-
£447 GBP
$600 USD
View
B
Retailer 4
-
£605 GBP
View
Retailer 5
-
£611 GBP
$820 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£661 GBP
$888 USD
View
B+
Retailer 7
-
£678 GBP
View
B
Retailer 8
-
£981 GBP
$1,317 USD
View
B
Retailer 9
-
£1,063 GBP
$1,426 USD
View
B
Retailer 10
-
£1,301 GBP
$1,746 USD
View
B
Retailer 11
-
£1,443 GBP
View
Most Expensive
Do Amore Diamonds
27-9DF4881C1 · Nov 2
£2,400 GBP
$3,220 USD
View
Price under review
11 more retailers have this diamond
Prices start from £303 GBPSave up to £1,140 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
1.62ct Round
£303 GBP