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Round|Lab Grown|IGI

1.74ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG528233778

Shape and cutting style on the report: Round brilliant

Certificate IGI LG528233778

Diamond specifications and retailer prices

From £253 GBP
$339 USD
As of October 29, 2026
Save £1,993 GBP (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,246 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.74ct lab-grown round diamond

This 1.74ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG528233778 or 528233778. Listed at 19 retailers as of October 29, 2026, with prices from £253 to £2,246, a £1,993 spread on the same certified stone. Do Amore Diamonds lists it at £2,246. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528233778
Dimensions7.71 × 7.79 × 4.75 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.71 mm7.79 mm1.74 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528233778
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

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 29
Current: £2,246 GBP|Low: £253 GBP|High: £2,246 GBP|Avg: £771 GBP
Do Amore Diamonds
Retailer 2
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Retailer 19
October 30, 2026
Retailer 19£253 GBP
Retailer 17£294 GBP
Retailer 5£314 GBP
Retailer 15£314 GBP
Retailer 13£332 GBP
Retailer 14£373 GBP
Retailer 3£384 GBP
Retailer 18£568 GBP
Retailer 7£575 GBP
Retailer 12£588 GBP
Retailer 9£589 GBP
Retailer 2£605 GBP
Retailer 11£649 GBP
Retailer 6£921 GBP
Retailer 8£1,028 GBP
Retailer 4£1,115 GBP
Retailer 10£1,231 GBP
Retailer 16£1,356 GBP
Do Amore Diamonds£2,246 GBP

11 data points across 19 retailers

19 retailers£253 GBP to £2,246 GBP

A
Cheapest Retailer
-
£253 GBP
$339 USD
A
Retailer 2
-
£294 GBP
$394 USD
View
A
Retailer 3
-
£314 GBP
$421 USD
View
A
Retailer 4
-
£314 GBP
$421 USD
View
B+
Retailer 5
-
£332 GBP
$445 USD
View
A
Retailer 6
-
£373 GBP
$500 USD
View
A
Retailer 7
-
£384 GBP
$514 USD
View
A
Retailer 8
-
£568 GBP
$761 USD
View
Retailer 9
-
£575 GBP
$770 USD
View
Price last confirmed 10 days ago
A
Retailer 10
-
£588 GBP
View
A
Retailer 11
-
£589 GBP
$789 USD
View
A
Retailer 12
-
£605 GBP
$810 USD
View
A
Retailer 13
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£649 GBP
$869 USD
View
A
Retailer 14
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£921 GBP
$1,234 USD
View
A
Retailer 15
-
£1,028 GBP
$1,378 USD
View
A
Retailer 16
-
£1,115 GBP
$1,494 USD
View
B+
Retailer 17
-
£1,231 GBP
$1,649 USD
View
B+
Retailer 18
-
£1,356 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B05EBA49C · Oct 29
£2,246 GBP
$3,010 USD
View
18 more retailers have this diamond
Prices start from £253 GBPSave up to £1,993 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 Round
£253 GBP