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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 $1,367 AUD
$960 USD
As of October 31, 2026
Save $6,118 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,485 AUD 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 29, 2026, with prices from $1,367 to $7,485, a $6,118 spread on the same certified stone. MOH London lists it at $7,485. 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
Colour
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 31
Current: $7,485 AUD|Low: $1,367 AUD|High: $7,534 AUD|Avg: $3,878 AUD|+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 30, 2026
Retailer 2$1,367 AUD
Retailer 5$2,248 AUD
Retailer 8$2,516 AUD
Retailer 6$2,607 AUD
Retailer 9$2,607 AUD
Retailer 10$2,847 AUD
Retailer 11$3,519 AUD
Retailer 7$4,103 AUD
Retailer 4$4,610 AUD
Retailer 3$7,462 AUD
MOH London$7,485 AUD

14 data points across 11 retailers

11 retailers$1,367 AUD to $7,485 AUD

A
Cheapest Retailer
-
$1,367 AUD
$960 USD
B+
Retailer 2
-
$2,248 AUD
$1,579 USD
View
B+
Retailer 3
-
$2,444 AUD
$1,717 USD
View
B+
Retailer 4
-
$2,516 AUD
$1,767 USD
View
Final sale: no returns
Retailer 5
-
$2,607 AUD
$1,831 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$2,607 AUD
$1,831 USD
View
B+
Retailer 7
-
$2,847 AUD
$2,000 USD
View
B
Retailer 8
-
$4,103 AUD
$2,882 USD
View
B
Retailer 9
-
$4,610 AUD
$3,238 USD
View
B
Retailer 10
-
$4,886 AUD
$3,432 USD
View
Most Expensive
B
MOH London
LG407939040 · Oct 29
$7,485 AUD
£4,140 GBP
View
10 more retailers have this diamond
Prices start from $1,367 AUDSave up to $6,118 AUD

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
$1,367 AUD