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Round|Lab Grown|IGI

1.74ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG407939040

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407939040

Diamond specifications and retailer prices

From $1,370 USD
As of October 28, 2026
Save $3,888 USD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,258 USD at MOH London · As of October 29, 2026
View at MOH London

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 LG407939040 or 407939040. Listed at 11 retailers as of October 28, 2026, with prices from $1,370 to $5,258, a $3,888 spread on the same certified stone. MOH London lists it at $5,258. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407939040
Dimensions7.62 × 7.66 × 4.80 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.62 mm7.66 mm1.74 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407939040
Side View
Table 56.5%Crown 36.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 28
Current: $5,258 USD|Low: $1,261 USD|High: $5,292 USD|Avg: $2,720 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 5$1,370 USD
Retailer 4$1,579 USD
Retailer 8$1,767 USD
Retailer 6$1,831 USD
Retailer 9$1,831 USD
Retailer 10$2,000 USD
Retailer 11$2,472 USD
Retailer 7$2,882 USD
Retailer 2$3,238 USD
Retailer 3$5,241 USD
MOH London$5,258 USD

14 data points across 11 retailers

11 retailers$1,370 USD to $5,258 USD

A
Cheapest Retailer
-
$1,370 USD
B+
Retailer 2
-
$1,579 USD
View
B+
Retailer 3
-
$1,717 USD
View
B+
Retailer 4
-
$1,767 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,831 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$1,831 USD
View
B+
Retailer 7
-
$2,000 USD
View
B
Retailer 8
-
$2,882 USD
View
B
Retailer 9
-
$3,238 USD
View
B
Retailer 10
-
$3,432 USD
View
Most Expensive
B
MOH London
LG407939040 · Oct 29
$5,258 USD
£4,140 GBP
View
10 more retailers have this diamond
Prices start from $1,370 USDSave up to $3,888 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
$1,370 USD