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Round|Lab Grown|IGI

1.73ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG440012040

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012040

Diamond specifications and retailer prices

From $1,367 AUD
$960 USD
As of October 31, 2026
Save $6,075 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,442 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.73ct lab-grown round diamond

This 1.73ct 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 LG440012040 or 440012040. Listed at 11 retailers as of October 29, 2026, with prices from $1,367 to $7,442, a $6,075 spread on the same certified stone. MOH London lists it at $7,442. 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

1.73
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012040
Dimensions7.93 × 7.95 × 4.61 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.93 mm7.95 mm1.73 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012040
Side View
Table 58.0%Crown 31.5°GirdlePavilion 40.4°Culet: NoneDepth 58.0%

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: $7,442 AUD|Low: $1,367 AUD|High: $7,501 AUD|Avg: $3,492 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$1,367 AUD
Retailer 4$2,235 AUD
Retailer 7$2,503 AUD
Retailer 5$2,592 AUD
Retailer 8$2,592 AUD
Retailer 9$2,833 AUD
Retailer 10$3,501 AUD
Retailer 6$4,080 AUD
Retailer 3$4,584 AUD
MOH London$7,442 AUD

16 data points across 10 retailers

11 retailers$1,367 AUD to $7,442 AUD

A
Cheapest Retailer
-
$1,367 AUD
$960 USD
B+
Retailer 2
-
$2,235 AUD
$1,570 USD
View
B+
Retailer 3
-
$2,432 AUD
$1,708 USD
View
B+
Retailer 4
-
$2,503 AUD
$1,758 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,592 AUD
$1,821 USD
View
Retailer 6
-
$2,592 AUD
$1,821 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
$2,833 AUD
$1,990 USD
View
B
Retailer 8
-
$4,080 AUD
$2,866 USD
View
B
Retailer 9
-
$4,584 AUD
$3,220 USD
View
B
Retailer 10
-
$4,859 AUD
$3,413 USD
View
Most Expensive
B
MOH London
LG440012040 · Oct 29
$7,442 AUD
£4,116 GBP
View
10 more retailers have this diamond
Prices start from $1,367 AUDSave up to $6,075 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
1.73ct Round
$1,367 AUD