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Radiant|Lab Grown|IGI

1.73ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG750524831

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

Certificate IGI LG750524831

Diamond specifications and retailer prices

From $578 NZD
$326 USD
As of October 30, 2026
Save $5,632 NZD (91%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $6,210 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.73ct lab-grown radiant diamond

This 1.73ct 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 top-tier cut grade and certified by IGI LG750524831 or 750524831. Listed at 27 retailers as of October 30, 2026, with prices from $578 to $6,210, a $5,632 spread on the same certified stone. Brilliant Earth lists it at $6,210. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750524831
Dimensions8.85 × 6.02 × 3.90 mm
L/W Ratio1.47
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
8.85 mm6.02 mm1.73 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750524831
Side View
Table 63.0%Crown 38.2°Girdle: MediumPavilion 34.8°Culet: NoneDepth 64.8%

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: $6,210 NZD|Low: $578 NZD|High: $7,204 NZD|Avg: $2,249 NZD|-13.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 1, 2026
Retailer 4$578 NZD
Retailer 14$646 NZD
Retailer 23$671 NZD
Retailer 7$717 NZD
Retailer 15$717 NZD
Retailer 21$994 NZD
Retailer 22$999 NZD
Retailer 13$1,040 NZD
Retailer 6$1,189 NZD
Retailer 20$1,359 NZD
Retailer 2$1,425 NZD
Retailer 3$1,804 NZD
Retailer 18$1,835 NZD
Retailer 8$2,101 NZD
Retailer 5$2,543 NZD
Retailer 11$2,708 NZD
Retailer 10$2,819 NZD
Retailer 17$2,821 NZD
Retailer 16$2,889 NZD
Retailer 12$3,083 NZD
Retailer 19$3,105 NZD
Retailer 9$5,128 NZD
Retailer 24$5,394 NZD
Brilliant Earth$6,210 NZD

38 data points across 24 retailers

27 retailers$578 NZD to $6,210 NZD

A
Cheapest Retailer
-
$578 NZD
$326 USD
A
Retailer 2
-
$646 NZD
$364 USD
View
Final sale: no returns
A
Retailer 3
-
$671 NZD
$378 USD
View
A
Retailer 4
-
$717 NZD
$404 USD
View
A
Retailer 5
-
$717 NZD
$404 USD
View
A
Retailer 6
-
$994 NZD
$560 USD
View
A
Retailer 7
-
$999 NZD
HK$4,400 HKD
View
A
Retailer 8
-
$1,040 NZD
$586 USD
View
A
Retailer 9
-
$1,189 NZD
$670 USD
View
A
Retailer 10
-
$1,359 NZD
ZAR 12,372 ZAR
View
A
Retailer 11
-
$1,425 NZD
£632 GBP
View
A
Retailer 12
-
$1,804 NZD
$1,017 USD
View
A
Retailer 13
-
$1,835 NZD
A$1,591 AUD
View
B+
Retailer 14
-
$2,101 NZD
$1,184 USD
View
B+
Retailer 15
-
$2,543 NZD
$1,433 USD
View
B+
Retailer 16
-
$2,708 NZD
$1,526 USD
View
B+
Retailer 17
-
$2,713 NZD
$1,529 USD
View
B+
Retailer 18
-
$2,819 NZD
$1,589 USD
View
B+
Retailer 19
-
$2,821 NZD
$1,590 USD
View
B+
Retailer 20
-
$2,889 NZD
SGD 2,200 SGD
View
B+
Retailer 21
-
$3,083 NZD
£1,368 GBP
View
B+
Retailer 22
-
$3,105 NZD
£1,378 GBP
View
B
Retailer 23
-
$5,128 NZD
$2,890 USD
View
B
Retailer 24
-
$5,323 NZD
$3,000 USD
View
Retailer 25
-
$5,394 NZD
$3,040 USD
View
Price last confirmed 14 days ago
B
Retailer 26
-
$5,678 NZD
£2,520 GBP
View
Most Expensive
B
Brilliant Earth
20152035Y · Oct 31
$6,210 NZD
$3,500 USD
View
26 more retailers have this diamond
Prices start from $578 NZDSave up to $5,632 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
1.73ct Radiant
$578 NZD