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Radiant|Lab Grown|IGI

1.69ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG618477171

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG618477171

Diamond specifications and retailer prices

From £120 GBP
$159 USD
As of October 27, 2026
Save £1,032 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,151 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 1.69ct lab-grown radiant diamond

This 1.69ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG618477171 or 618477171. Listed at 10 retailers as of October 27, 2026, with prices from £120 to £1,151, a £1,032 spread on the same certified stone. Do Amore Diamonds lists it at £1,151. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618477171
Dimensions8.35 × 5.86 × 3.97 mm
L/W Ratio1.42
Culet sizeNone
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
8.35 mm5.86 mm1.69 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618477171
Side View
Table 65.0%Crown 43.7°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
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 27
Current: £1,151 GBP|Low: £120 GBP|High: £1,219 GBP|Avg: £542 GBP|-5.6%
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 8£120 GBP
Retailer 6£139 GBP
Retailer 13£142 GBP
Retailer 10£270 GBP
Retailer 3£321 GBP
Retailer 4£471 GBP
Retailer 7£505 GBP
Retailer 9£528 GBP
Retailer 11£547 GBP
Retailer 5£715 GBP
Retailer 2£772 GBP
Retailer 12£813 GBP
Do Amore Diamonds£1,151 GBP

21 data points across 13 retailers

10 retailers£120 GBP to £1,151 GBP

A
Cheapest Retailer
-
£120 GBP
$159 USD
A
Retailer 2
-
£139 GBP
$185 USD
View
A
Retailer 3
-
£142 GBP
$189 USD
View
Final sale: no returns
B+
Retailer 4
-
£270 GBP
$359 USD
View
B+
Retailer 5
-
£505 GBP
$671 USD
View
B+
Retailer 6
-
£528 GBP
$702 USD
View
B+
Retailer 7
-
£547 GBP
$727 USD
View
B+
Retailer 8
-
£772 GBP
View
B
Retailer 9
-
£813 GBP
$1,080 USD
View
Most Expensive
B
Do Amore Diamonds
27-F947BC3DD · Oct 28
£1,151 GBP
$1,530 USD
View
9 more retailers have this diamond
Prices start from £120 GBPSave up to £1,032 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 Radiant
£120 GBP