CaratHunter
Plans
Cushion|Lab Grown|IGI

1.74ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • IGI LG551273702

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG551273702

Diamond specifications and retailer prices

From £279 GBP
As of October 27, 2026
Save £1,248 GBP (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,528 GBP at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.74ct lab-grown cushion diamond

This 1.74ct lab-grown cushion 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 LG551273702 or 551273702. Listed at 6 retailers as of October 27, 2026, with prices from £279 to £1,528, a £1,248 spread on the same certified stone. Do Amore Diamonds lists it at £1,528. 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

1.74
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551273702
Dimensions7.06 × 6.97 × 4.72 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
7.06 mm6.97 mm1.74 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551273702
Side View
Table 61.0%Crown 36.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 67.7%

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 27
Current: £1,528 GBP|Low: £180 GBP|High: £1,543 GBP|Avg: £694 GBP|+3.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 27, 2026
Retailer 7£180 GBP
Retailer 2£279 GBP
Retailer 4£339 GBP
Retailer 5£665 GBP
Retailer 3£874 GBP
Retailer 6£917 GBP
Do Amore Diamonds£1,528 GBP

30 data points across 7 retailers

6 retailers£279 GBP to £1,528 GBP

A
Cheapest Retailer
-
£279 GBP
Retailer 2
-
£339 GBP
$455 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£665 GBP
$892 USD
View
B+
Retailer 4
-
£874 GBP
View
B
Retailer 5
-
£917 GBP
$1,230 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-9CFE6A83D · Oct 27
£1,528 GBP
$2,050 USD
View
5 more retailers have this diamond
Prices start from £279 GBPSave up to £1,248 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
1.74ct Cushion
£279 GBP