CaratHunter
Plans
Round|Lab Grown|IGI

1.73ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG564351777

Shape and cutting style on the report: Round brilliant

Certificate IGI LG564351777

Diamond specifications and retailer prices

From £225 GBP
$301 USD
As of November 2, 2026
Save £1,432 GBP (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,657 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.73ct lab-grown round diamond

This 1.73ct 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 LG564351777 or 564351777. Listed at 17 retailers as of November 2, 2026, with prices from £225 to £1,657, a £1,432 spread on the same certified stone. Do Amore Diamonds lists it at £1,657. 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

1.73
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG564351777
Dimensions7.70 × 7.66 × 4.77 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.70 mm7.66 mm1.73 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG564351777
Side View
Table 57.0%Crown 35.6°Girdle: MediumPavilion 41°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 2
Current: £1,657 GBP|Low: £199 GBP|High: £1,709 GBP|Avg: £570 GBP|-3.1%
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
Retailer 15
November 2, 2026
Retailer 6£199 GBP
Retailer 7£221 GBP
Retailer 4£225 GBP
Retailer 15£288 GBP
Retailer 3£315 GBP
Retailer 13£316 GBP
Retailer 12£409 GBP
Retailer 8£449 GBP
Retailer 10£466 GBP
Retailer 2£512 GBP
Retailer 14£627 GBP
Retailer 11£690 GBP
Retailer 5£916 GBP
Retailer 9£947 GBP
Do Amore Diamonds£1,657 GBP

40 data points across 15 retailers

17 retailers£225 GBP to £1,657 GBP

Retailer 1
-
£178 GBP
$238 USD
Price last confirmed 34 days ago
Retailer 2
-
£206 GBP
$276 USD
View
Price last confirmed 41 days ago
Retailer 3
-
£218 GBP
$292 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
£225 GBP
$301 USD
View
B+
Retailer 5
-
£288 GBP
$386 USD
View
A
Retailer 6
-
£315 GBP
HK$3,300 HKD
View
A
Retailer 7
-
£316 GBP
$423 USD
View
A
Retailer 8
-
£409 GBP
$548 USD
View
A
Retailer 9
-
£419 GBP
$562 USD
View
A
Retailer 10
-
£449 GBP
View
B+
Retailer 11
-
£512 GBP
€653 EUR
View
Retailer 12
-
£627 GBP
$840 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
£690 GBP
$925 USD
View
Retailer 14
-
£783 GBP
$1,049 USD
View
Price last confirmed 32 days ago
B
Retailer 15
-
£916 GBP
SGD 1,658 SGD
View
B
Retailer 16
-
£947 GBP
View
Most Expensive
B
Do Amore Diamonds
27-480D56BE2 · Nov 2
£1,657 GBP
$2,220 USD
View
16 more retailers have this diamond
Prices start from £225 GBPSave up to £1,432 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
1.73ct Round
£225 GBP