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Round|Lab Grown|IGI

1.58ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG815643990

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815643990

Diamond specifications and retailer prices

From £260 GBP
$348 USD
As of November 1, 2026
Save £2,561 GBP (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,821 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815643990 or 815643990. Listed at 24 retailers as of October 31, 2026, with prices from £260 to £2,821, a £2,561 spread on the same certified stone. Brilliant Earth lists it at £2,821. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815643990
Dimensions7.53 × 7.51 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm7.51 mm1.58 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815643990
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.1%

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: £2,821 GBP|Low: £252 GBP|High: £2,821 GBP|Avg: £871 GBP
Brilliant Earth
Retailer 2
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Retailer 22
November 2, 2026
Retailer 21£260 GBP
Retailer 10£302 GBP
Retailer 3£322 GBP
Retailer 14£322 GBP
Retailer 22£433 GBP
Retailer 20£437 GBP
Retailer 13£457 GBP
Retailer 2£509 GBP
Retailer 5£514 GBP
Retailer 16£555 GBP
Retailer 17£573 GBP
Retailer 6£702 GBP
Retailer 19£748 GBP
Retailer 18£752 GBP
Retailer 7£1,035 GBP
Retailer 8£1,046 GBP
Retailer 12£1,067 GBP
Retailer 9£1,217 GBP
Retailer 4£1,260 GBP
Retailer 11£1,396 GBP
Retailer 15£1,470 GBP
Brilliant Earth£2,821 GBP

33 data points across 22 retailers

24 retailers£260 GBP to £2,821 GBP

A
Cheapest Retailer
-
£260 GBP
$348 USD
A
Retailer 2
-
£302 GBP
$404 USD
View
A
Retailer 3
-
£322 GBP
$432 USD
View
Retailer 4
-
£322 GBP
$432 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£363 GBP
HK$3,800 HKD
View
A
Retailer 6
-
£433 GBP
$580 USD
View
A
Retailer 7
-
£437 GBP
$585 USD
View
A
Retailer 8
-
£457 GBP
View
A
Retailer 9
-
£509 GBP
€649 EUR
View
A
Retailer 10
-
£514 GBP
$689 USD
View
A
Retailer 11
-
£555 GBP
ZAR 12,021 ZAR
View
A
Retailer 12
-
£573 GBP
View
B+
Retailer 13
-
£702 GBP
$940 USD
View
B+
Retailer 14
-
£748 GBP
A$1,541 AUD
View
B+
Retailer 15
-
£752 GBP
$1,008 USD
View
B+
Retailer 16
-
£1,035 GBP
$1,387 USD
View
B
Retailer 17
-
£1,046 GBP
SGD 1,894 SGD
View
B
Retailer 18
-
£1,067 GBP
$1,429 USD
View
B
Retailer 19
-
£1,146 GBP
$1,535 USD
View
B
Retailer 20
-
£1,217 GBP
$1,630 USD
View
Retailer 21
-
£1,260 GBP
View
Price last confirmed 8 days ago
B
Retailer 22
-
£1,396 GBP
$1,871 USD
View
Retailer 23
-
£1,470 GBP
$1,970 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20763342A · Oct 31
£2,821 GBP
$3,780 USD
View
23 more retailers have this diamond
Prices start from £260 GBPSave up to £2,561 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
1.58ct Round
£260 GBP