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Round|Lab Grown|IGI

1.74ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG591310801

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591310801

Diamond specifications and retailer prices

From €281 EUR
$314 USD
As of October 30, 2026
Save €990 EUR (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,271 EUR at Brilliant Earth · As of October 31, 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 IGI LG591310801 or 591310801. Listed at 11 retailers as of October 30, 2026, with prices from €281 to €1,271, a €990 spread on the same certified stone. Brilliant Earth lists it at €1,271. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591310801
Dimensions7.68 × 7.72 × 4.81 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
7.68 mm7.72 mm1.74 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591310801
Side View
Table 55.0%Crown 36.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.5%

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 30
Current: €1,271 EUR|Low: €281 EUR|High: €1,620 EUR|Avg: €671 EUR|+2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4€281 EUR
Retailer 9€367 EUR
Retailer 8€388 EUR
Retailer 3€398 EUR
Retailer 5€441 EUR
Retailer 10€464 EUR
Retailer 2€524 EUR
Retailer 7€616 EUR
Retailer 12€887 EUR
Retailer 11€1,072 EUR
Retailer 6€1,112 EUR
Brilliant Earth€1,271 EUR

40 data points across 12 retailers

11 retailers€281 EUR to €1,271 EUR

A
Cheapest Retailer
-
€281 EUR
$314 USD
Final sale: no returns
A
Retailer 2
-
€367 EUR
HK$3,200 HKD
View
A
Retailer 3
-
€388 EUR
$433 USD
View
A
Retailer 4
-
€441 EUR
View
A
Retailer 5
-
€464 EUR
$518 USD
View
A
Retailer 6
-
€524 EUR
£461 GBP
View
B+
Retailer 7
-
€616 EUR
A$1,058 AUD
View
B
Retailer 8
-
€887 EUR
$991 USD
View
B
Retailer 9
-
€1,072 EUR
SGD 1,619 SGD
View
B
Retailer 10
-
€1,112 EUR
£978 GBP
View
Most Expensive
B
Brilliant Earth
7790795A · Oct 31
€1,271 EUR
$1,420 USD
View
10 more retailers have this diamond
Prices start from €281 EURSave up to €990 EUR

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
€281 EUR