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Round|Lab Grown|IGI

3.70ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG600387288

Shape and cutting style on the report: Round brilliant

Certificate IGI LG600387288

Diamond specifications and retailer prices

From $4,195 AUD
$2,940 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $4,195 AUD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 3.7ct lab-grown round diamond

This 3.7ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600387288 or 600387288. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.70
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600387288
Dimensions9.86 × 9.81 × 6.15 mm
L/W Ratio1.01
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
9.86 mm9.81 mm3.70 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600387288
Side View
Table 56.0%Crown 35.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $4,195 AUD|Low: $1,132 AUD|High: $5,651 AUD|Avg: $2,733 AUD|-15.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
April 22, 2026
Retailer 11$1,132 AUD
Retailer 9$1,227 AUD
Retailer 4$1,504 AUD
Retailer 6$1,537 AUD
Retailer 2$1,619 AUD
Retailer 5$2,128 AUD
Retailer 8$2,841 AUD
Retailer 7$3,359 AUD
Retailer 3$3,483 AUD
Retailer 10$3,942 AUD
Brilliant Earth$4,195 AUD

58 data points across 11 retailers

1 retailer

B
Brilliant Earth
8746423A · Oct 31
$4,195 AUD
$2,940 USD
View

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B
3.70ct Round
$4,195 AUD