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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 $402 SGD
$314 USD
As of October 28, 2026
Save $1,418 SGD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,820 SGD 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 IGI LG591310801 or 591310801. Listed at 11 retailers as of October 28, 2026, with prices from $402 to $1,820, a $1,418 spread on the same certified stone. Brilliant Earth lists it at $1,820. 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 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

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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 28
Current: $1,820 SGD|Low: $402 SGD|High: $2,320 SGD|Avg: $958 SGD|+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
October 29, 2026
Retailer 4$402 SGD
Retailer 9$525 SGD
Retailer 8$555 SGD
Retailer 3$570 SGD
Retailer 6$633 SGD
Retailer 10$664 SGD
Retailer 2$750 SGD
Retailer 7$881 SGD
Retailer 12$1,270 SGD
Retailer 11$1,536 SGD
Retailer 5$1,592 SGD
Brilliant Earth$1,820 SGD

39 data points across 12 retailers

11 retailers$402 SGD to $1,820 SGD

A
Cheapest Retailer
-
$402 SGD
$314 USD
Final sale: no returns
A
Retailer 2
-
$525 SGD
HK$3,200 HKD
View
A
Retailer 3
-
$555 SGD
$433 USD
View
A
Retailer 4
-
$633 SGD
€470 EUR
View
A
Retailer 5
-
$664 SGD
$518 USD
View
A
Retailer 6
-
$750 SGD
£461 GBP
View
B+
Retailer 7
-
$881 SGD
A$1,058 AUD
View
B
Retailer 8
-
$1,270 SGD
$991 USD
View
B
Retailer 9
-
$1,536 SGD
View
B
Retailer 10
-
$1,592 SGD
£978 GBP
View
Most Expensive
B
Brilliant Earth
7790795A · Oct 29
$1,820 SGD
$1,420 USD
View
10 more retailers have this diamond
Prices start from $402 SGDSave up to $1,418 SGD

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
$402 SGD