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Round|Lab Grown|IGI

1.72ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG787640381

Certificate IGI LG787640381

Diamond specifications and retailer prices

From $1,586 AUD
$1,114 USD
As of October 31, 2026
Save $1,532 AUD (49%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,118 AUD at Jared · As of October 30, 2026
View at Jared

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 top-tier cut grade and certified by IGI LG787640381 or 787640381. Listed at 4 retailers as of October 30, 2026, with prices from $1,586 to $3,118, a $1,532 spread on the same certified stone. Jared lists it at $3,118. 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

1.72
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG787640381
Dimensions7.70 × 7.74 × 4.67 mm
L/W Ratio1.01
Top View
7.70 mm7.74 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787640381
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $3,118 AUD|Low: $1,586 AUD|High: $3,118 AUD|Avg: $2,489 AUD
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2$1,586 AUD
Retailer 3$2,164 AUD
Retailer 4$2,164 AUD
Jared$3,118 AUD

6 data points across 4 retailers

4 retailers$1,586 AUD to $3,118 AUD

B
Cheapest Retailer
-
$1,586 AUD
$1,114 USD
B
Retailer 2
-
$2,164 AUD
$1,520 USD
View
B
Retailer 3
-
$2,164 AUD
$1,520 USD
View
Most Expensive
B
Jared
158608383 · Oct 30
$3,118 AUD
$2,190 USD
View
3 more retailers have this diamond
Prices start from $1,586 AUDSave up to $1,532 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.

B
1.72ct Round
$1,586 AUD