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1.74ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG497158239

Shape and cutting style on the report: Round brilliant

Certificate IGI LG497158239

Diamond specifications and retailer prices

From $1,757 NZD
$990 USD
As of October 31, 2026
Save $7,523 NZD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,279 NZD at MOH London · As of November 1, 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 LG497158239 or 497158239. Listed at 11 retailers as of October 31, 2026, with prices from $1,757 to $9,279, a $7,523 spread on the same certified stone. MOH London lists it at $9,279. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497158239
Dimensions7.66 × 7.69 × 4.77 mm
L/W Ratio1.00
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
7.66 mm7.69 mm1.74 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497158239
Side View
Table 56.5%Crown 35.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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: $9,279 NZD|Low: $1,757 NZD|High: $9,403 NZD|Avg: $4,330 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,757 NZD
Retailer 4$2,802 NZD
Retailer 7$3,135 NZD
Retailer 5$3,249 NZD
Retailer 8$3,249 NZD
Retailer 9$3,549 NZD
Retailer 10$4,386 NZD
Retailer 6$5,114 NZD
Retailer 3$5,745 NZD
MOH London$9,279 NZD

17 data points across 10 retailers

11 retailers$1,757 NZD to $9,279 NZD

A
Cheapest Retailer
-
$1,757 NZD
$990 USD
B+
Retailer 2
-
$2,802 NZD
$1,579 USD
View
B+
Retailer 3
-
$3,046 NZD
$1,717 USD
View
B+
Retailer 4
-
$3,135 NZD
$1,767 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,249 NZD
$1,831 USD
View
Retailer 6
-
$3,249 NZD
$1,831 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$3,549 NZD
$2,000 USD
View
B
Retailer 8
-
$5,114 NZD
$2,882 USD
View
B
Retailer 9
-
$5,745 NZD
$3,238 USD
View
B
Retailer 10
-
$6,089 NZD
$3,432 USD
View
Most Expensive
B
MOH London
LG497158239 · Nov 1
$9,279 NZD
£4,118 GBP
View
10 more retailers have this diamond
Prices start from $1,757 NZDSave up to $7,523 NZD

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
$1,757 NZD