CaratHunter
Plans
Radiant|Lab Grown|IGI

1.61ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG553222549

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

Certificate IGI LG553222549

Diamond specifications and retailer prices

From £129 GBP
$173 USD
As of October 27, 2026
Save £1,108 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,237 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.61ct lab-grown radiant diamond

This 1.61ct lab-grown radiant 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 LG553222549 or 553222549. Listed at 10 retailers as of October 27, 2026, with prices from £129 to £1,237, a £1,108 spread on the same certified stone. Do Amore Diamonds lists it at £1,237. 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

1.61
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.5°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG553222549
Dimensions8.17 × 5.74 × 3.92 mm
L/W Ratio1.42
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
8.17 mm5.74 mm1.61 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG553222549
Side View
Table 67.5%Crown 49.5°Girdle: MediumPavilion 36.3°Culet: NoneDepth 68.3%

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 27
Current: £1,237 GBP|Low: £103 GBP|High: £1,282 GBP|Avg: £530 GBP|-3.5%
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
Retailer 14
October 29, 2026
Retailer 9£129 GBP
Retailer 7£150 GBP
Retailer 13£150 GBP
Retailer 11£285 GBP
Retailer 3£312 GBP
Retailer 4£399 GBP
Retailer 6£479 GBP
Retailer 14£518 GBP
Retailer 8£542 GBP
Retailer 10£567 GBP
Retailer 5£683 GBP
Retailer 12£782 GBP
Retailer 2£829 GBP
Do Amore Diamonds£1,237 GBP

16 data points across 14 retailers

10 retailers£129 GBP to £1,237 GBP

A
Cheapest Retailer
-
£129 GBP
$173 USD
A
Retailer 2
-
£150 GBP
$201 USD
View
A
Retailer 3
-
£150 GBP
$201 USD
View
Final sale: no returns
B+
Retailer 4
-
£285 GBP
$382 USD
View
Retailer 5
-
£542 GBP
$728 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£567 GBP
$761 USD
View
B
Retailer 7
-
£768 GBP
View
B
Retailer 8
-
£782 GBP
$1,050 USD
View
B
Retailer 9
-
£829 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B1F078C1D · Oct 29
£1,237 GBP
$1,660 USD
View
9 more retailers have this diamond
Prices start from £129 GBPSave up to £1,108 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
1.61ct Radiant
£129 GBP