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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 $1,476 NZD
$832 USD
As of October 30, 2026
Save $5,656 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,133 NZD 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 $1,476 to $7,133, a $5,656 spread on the same certified stone. Brilliant Earth lists it at $7,133. 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: $7,133 NZD|Low: $1,437 NZD|High: $7,967 NZD|Avg: $3,497 NZD|-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$1,476 NZD
Retailer 10$1,508 NZD
Retailer 2$1,606 NZD
Retailer 5$1,831 NZD
Retailer 11$2,335 NZD
Retailer 4$3,514 NZD
Retailer 3$3,584 NZD
Retailer 6$4,619 NZD
Retailer 9$4,808 NZD
Retailer 7$5,598 NZD
Brilliant Earth$7,133 NZD

42 data points across 11 retailers

11 retailers$1,476 NZD to $7,133 NZD

A
Cheapest Retailer
-
$1,476 NZD
$832 USD
A
Retailer 2
-
$1,508 NZD
$850 USD
View
A
Retailer 3
-
$1,606 NZD
€862 EUR
View
B+
Retailer 4
-
$1,831 NZD
£813 GBP
View
B+
Retailer 5
-
$2,335 NZD
$1,316 USD
View
B
Retailer 6
-
$3,514 NZD
A$3,047 AUD
View
B
Retailer 7
-
$3,584 NZD
$2,020 USD
View
B
Retailer 8
-
$4,619 NZD
£2,050 GBP
View
B
Retailer 9
-
$4,808 NZD
$2,710 USD
View
Retailer 10
-
$5,598 NZD
$3,155 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
16081761A · Oct 30
$7,133 NZD
$4,020 USD
View
10 more retailers have this diamond
Prices start from $1,476 NZDSave up to $5,656 NZD

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
$1,476 NZD