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Round|Lab Grown|IGI

1.74ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG668409277

Shape and cutting style on the report: Round brilliant

Certificate IGI LG668409277

Diamond specifications and retailer prices

From $222 USD
As of October 29, 2026
Save $1,258 USD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,480 USD at Brilliant Earth · As of October 28, 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 LG668409277 or 668409277. Listed at 14 retailers as of October 28, 2026, with prices from $222 to $1,480, a $1,258 spread on the same certified stone. Brilliant Earth lists it at $1,480. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668409277
Dimensions7.81 × 7.74 × 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 Type IIa
Top View
7.81 mm7.74 mm1.74 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668409277
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.8%

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: $1,480 USD|Low: $208 USD|High: $1,480 USD|Avg: $563 USD|+2.8%
Brilliant Earth
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
October 29, 2026
Retailer 13$222 USD
Retailer 6$243 USD
Retailer 10$258 USD
Retailer 5$276 USD
Retailer 9$276 USD
Retailer 11$471 USD
Retailer 7$496 USD
Retailer 2$511 USD
Retailer 3$538 USD
Retailer 14$542 USD
Retailer 4$887 USD
Retailer 12$890 USD
Retailer 8$1,106 USD
Brilliant Earth$1,480 USD

42 data points across 14 retailers

14 retailers$222 USD to $1,480 USD

A
Cheapest Retailer
-
$222 USD
A
Retailer 2
-
$243 USD
View
Final sale: no returns
A
Retailer 3
-
$258 USD
View
A
Retailer 4
-
$276 USD
View
A
Retailer 5
-
$276 USD
View
B+
Retailer 6
-
$471 USD
View
A
Retailer 7
-
$496 USD
€472 EUR
View
A
Retailer 8
-
$511 USD
£402 GBP
View
A
Retailer 9
-
$538 USD
View
A
Retailer 10
-
$542 USD
View
B
Retailer 11
-
$887 USD
View
B+
Retailer 12
-
$890 USD
View
B
Retailer 13
-
$1,106 USD
£871 GBP
View
Most Expensive
B
Brilliant Earth
13161355A · Oct 28
$1,480 USD
View
13 more retailers have this diamond
Prices start from $222 USDSave up to $1,258 USD

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
$222 USD