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Round|Lab Grown|GIA

1.74ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 2517240999

Certificate GIA 2517240999

Diamond specifications and retailer prices

From £437 GBP
$582 USD
As of October 29, 2026
Save £1,005 GBP (70%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,442 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2517240999. Listed at 6 retailers as of October 29, 2026, with prices from £437 to £1,442, a £1,005 spread on the same certified stone. Brilliant Earth lists it at £1,442. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 2517240999
Dimensions7.72 × 7.75 × 4.76 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.72 mm7.75 mm1.74 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2517240999
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.6%

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 29
Current: £1,442 GBP|Low: £437 GBP|High: £2,527 GBP|Avg: £1,082 GBP|-8.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 6£437 GBP
Retailer 9£586 GBP
Retailer 4£644 GBP
Retailer 5£662 GBP
Retailer 8£768 GBP
Retailer 2£787 GBP
Retailer 3£790 GBP
Brilliant Earth£1,442 GBP
Retailer 10£2,153 GBP
Retailer 7£2,527 GBP

22 data points across 10 retailers

6 retailers£437 GBP to £1,442 GBP

A
Cheapest Retailer
-
£437 GBP
$582 USD
B+
Retailer 2
-
£644 GBP
HK$6,700 HKD
View
B+
Retailer 3
-
£662 GBP
$882 USD
View
B+
Retailer 4
-
£787 GBP
€998 EUR
View
B
Retailer 5
-
£790 GBP
A$1,618 AUD
View
Most Expensive
B
Brilliant Earth
13162572A · Oct 29
£1,442 GBP
$1,920 USD
View
5 more retailers have this diamond
Prices start from £437 GBPSave up to £1,005 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
£437 GBP