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Radiant|Lab Grown|IGI

1.70ct G IF Radiant Lab Grown Diamond

ID • G/IF • IGI LG581327872

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG581327872

Diamond specifications and retailer prices

From $458 AUD
$322 USD
As of October 30, 2026
Save $3,158 AUD (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,616 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG581327872 or 581327872. Listed at 18 retailers as of October 30, 2026, with prices from $458 to $3,616, a $3,158 spread on the same certified stone. Brilliant Earth lists it at $3,616. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
G
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581327872
Dimensions8.12 × 5.99 × 4.08 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II Faint Blue
Top View
8.12 mm5.99 mm1.70 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581327872
Side View
Table 63.0%Crown 44.2°Girdle: MediumPavilion 36.3°Culet: NoneDepth 68.1%

Caratlytics Score

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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: $3,616 AUD|Low: $440 AUD|High: $4,598 AUD|Avg: $1,399 AUD|-21.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 15$458 AUD
Retailer 5$512 AUD
Retailer 3$568 AUD
Retailer 14$766 AUD
Retailer 11$790 AUD
Retailer 6$945 AUD
Retailer 12$958 AUD
Retailer 10$976 AUD
Retailer 2$1,014 AUD
Retailer 9$1,324 AUD
Retailer 13$1,360 AUD
Retailer 7$1,627 AUD
Retailer 4$2,184 AUD
Retailer 8$2,289 AUD
Brilliant Earth$3,616 AUD

45 data points across 15 retailers

18 retailers$458 AUD to $3,616 AUD

A
Cheapest Retailer
-
$458 AUD
$322 USD
A
Retailer 2
-
$512 AUD
$360 USD
View
Final sale: no returns
A
Retailer 3
-
$531 AUD
$373 USD
View
A
Retailer 4
-
$568 AUD
$399 USD
View
A
Retailer 5
-
$568 AUD
$399 USD
View
A
Retailer 6
-
$766 AUD
$538 USD
View
A
Retailer 7
-
$790 AUD
$555 USD
View
A
Retailer 8
-
$945 AUD
$664 USD
View
A
Retailer 9
-
$976 AUD
ZAR 11,074 ZAR
View
A
Retailer 10
-
$1,014 AUD
£561 GBP
View
A
Retailer 11
-
$1,324 AUD
View
B+
Retailer 12
-
$1,360 AUD
$955 USD
View
B+
Retailer 13
-
$1,627 AUD
$1,143 USD
View
B+
Retailer 14
-
$1,825 AUD
$1,282 USD
View
B+
Retailer 15
-
$1,890 AUD
$1,327 USD
View
B
Retailer 16
-
$2,184 AUD
$1,534 USD
View
B+
Retailer 17
-
$2,289 AUD
£1,266 GBP
View
Most Expensive
B
Brilliant Earth
21312144A · Oct 30
$3,616 AUD
$2,540 USD
View
17 more retailers have this diamond
Prices start from $458 AUDSave up to $3,158 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
1.70ct Radiant
$458 AUD