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Round|Lab Grown|IGI

1.72ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG7492342691

Certificate IGI LG7492342691

Diamond specifications and retailer prices

From $604 AUD
$424 USD
As of October 30, 2026
Save $1,446 AUD (71%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,050 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.72ct lab-grown round diamond

This 1.72ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG7492342691 or 7492342691. Listed at 3 retailers as of October 30, 2026, with prices from $604 to $2,050, a $1,446 spread on the same certified stone. Brilliant Earth lists it at $2,050. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.72
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG7492342691
Dimensions7.67 × 7.64 × 4.73 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.67 mm7.64 mm1.72 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG7492342691
Side View
Table 57.0%Crown 35.5°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
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 30
Current: $2,050 AUD|Low: $604 AUD|High: $2,804 AUD|Avg: $1,478 AUD|-26.9%
Brilliant Earth
Retailer 2
Retailer 3
October 30, 2026
Retailer 2$604 AUD
Retailer 3$1,018 AUD
Brilliant Earth$2,050 AUD

4 data points across 3 retailers

3 retailers$604 AUD to $2,050 AUD

A
Cheapest Retailer
-
$604 AUD
$424 USD
B+
Retailer 2
-
$1,018 AUD
$715 USD
View
Most Expensive
B
Brilliant Earth
10228658A · Oct 30
$2,050 AUD
$1,440 USD
View
2 more retailers have this diamond
Prices start from $604 AUDSave up to $1,446 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
1.72ct Round
$604 AUD