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Round|Lab Grown|IGI

1.69ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG649471818

Shape and cutting style on the report: Round brilliant

Certificate IGI LG649471818

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 29, 2026
Save £1,288 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,438 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.69ct lab-grown round diamond

This 1.69ct 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 LG649471818 or 649471818. Listed at 11 retailers as of October 29, 2026, with prices from £150 to £1,438, a £1,288 spread on the same certified stone. Do Amore Diamonds lists it at £1,438. 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

1.69
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649471818
Dimensions7.74 × 7.68 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.74 mm7.68 mm1.69 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649471818
Side View
Table 60.0%Crown 33°Girdle: MediumPavilion 40.8°Culet: NoneDepth 59.7%

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: £1,438 GBP|Low: £145 GBP|High: £1,468 GBP|Avg: £545 GBP|-2.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 10£150 GBP
Retailer 3£170 GBP
Retailer 8£174 GBP
Retailer 7£323 GBP
Retailer 4£378 GBP
Retailer 9£570 GBP
Retailer 5£599 GBP
Retailer 6£659 GBP
Retailer 11£715 GBP
Retailer 2£826 GBP
Do Amore Diamonds£1,438 GBP

35 data points across 11 retailers

11 retailers£150 GBP to £1,438 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£170 GBP
$228 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$233 USD
View
B+
Retailer 4
-
£323 GBP
$433 USD
View
A
Retailer 5
-
£378 GBP
View
B+
Retailer 6
-
£570 GBP
$765 USD
View
B+
Retailer 7
-
£599 GBP
$804 USD
View
B+
Retailer 8
-
£659 GBP
$885 USD
View
B
Retailer 9
-
£715 GBP
$960 USD
View
B
Retailer 10
-
£826 GBP
View
Most Expensive
B
Do Amore Diamonds
27-3DE2B17C8 · Oct 29
£1,438 GBP
$1,930 USD
View
10 more retailers have this diamond
Prices start from £150 GBPSave up to £1,288 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
1.69ct Round
£150 GBP