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Radiant|Lab Grown|IGI

1.70ct D IF Radiant Lab Grown Diamond

GD • D/IF • IGI LG729529458

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

Certificate IGI LG729529458

Diamond specifications and retailer prices

From $1,184 AUD
$832 USD
As of October 30, 2026
Save $4,538 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,723 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG729529458 or 729529458. Listed at 11 retailers as of October 30, 2026, with prices from $1,184 to $5,723, a $4,538 spread on the same certified stone. Brilliant Earth lists it at $5,723. 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

1.70
Carat
D
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729529458
Dimensions8.44 × 5.89 × 3.88 mm
L/W Ratio1.43
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
Top View
8.44 mm5.89 mm1.70 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729529458
Side View
Table 67.0%Crown 46.2°Girdle: MediumPavilion 34.7°Culet: NoneDepth 65.9%

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: $5,723 AUD|Low: $1,153 AUD|High: $6,392 AUD|Avg: $2,806 AUD|-10.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 8$1,184 AUD
Retailer 10$1,210 AUD
Retailer 7$1,284 AUD
Retailer 4$1,469 AUD
Retailer 11$1,873 AUD
Retailer 2$2,820 AUD
Retailer 3$2,876 AUD
Retailer 5$3,706 AUD
Retailer 9$3,858 AUD
Retailer 6$4,491 AUD
Brilliant Earth$5,723 AUD

42 data points across 11 retailers

11 retailers$1,184 AUD to $5,723 AUD

A
Cheapest Retailer
-
$1,184 AUD
$832 USD
A
Retailer 2
-
$1,210 AUD
$850 USD
View
Retailer 3
-
$1,284 AUD
€859 EUR
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$1,469 AUD
£813 GBP
View
B+
Retailer 5
-
$1,873 AUD
$1,316 USD
View
B
Retailer 6
-
$2,820 AUD
View
B
Retailer 7
-
$2,876 AUD
$2,020 USD
View
B
Retailer 8
-
$3,706 AUD
£2,050 GBP
View
B
Retailer 9
-
$3,858 AUD
$2,710 USD
View
Retailer 10
-
$4,491 AUD
$3,155 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
16081761A · Oct 30
$5,723 AUD
$4,020 USD
View
10 more retailers have this diamond
Prices start from $1,184 AUDSave up to $4,538 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
$1,184 AUD