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Radiant|Lab Grown|IGI

1.74ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG818654254

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

Certificate IGI LG818654254

Diamond specifications and retailer prices

From $525 NZD
$295 USD
As of October 30, 2026
Save $5,724 NZD (92%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,250 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.74ct lab-grown radiant diamond

This 1.74ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818654254 or 818654254. Listed at 21 retailers as of October 29, 2026, with prices from $525 to $6,250, a $5,724 spread on the same certified stone. Brilliant Earth lists it at $6,250. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.74
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654254
Dimensions8.22 × 5.92 × 4.07 mm
L/W Ratio1.39
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
8.22 mm5.92 mm1.74 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654254
Side View
Table 64.0%Crown 29.3°Girdle: MediumPavilion 36.7°Culet: NoneDepth 68.8%

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: $6,250 NZD|Low: $605 NZD|High: $6,463 NZD|Avg: $2,088 NZD|-3.3%
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
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 5$605 NZD
Retailer 15$671 NZD
Retailer 14$926 NZD
Retailer 8$1,067 NZD
Retailer 13$1,119 NZD
Retailer 4$1,131 NZD
Retailer 2$1,151 NZD
Retailer 16$1,178 NZD
Retailer 12$1,515 NZD
Retailer 18$1,658 NZD
Retailer 7$2,179 NZD
Retailer 3$2,277 NZD
Retailer 6$2,329 NZD
Retailer 9$2,329 NZD
Retailer 11$2,623 NZD
Retailer 10$3,087 NZD
Retailer 17$4,790 NZD
Brilliant Earth$6,250 NZD

29 data points across 18 retailers

21 retailers$525 NZD to $6,250 NZD

A
Cheapest Retailer
-
$525 NZD
$295 USD
A
Retailer 2
-
$605 NZD
$340 USD
View
Final sale: no returns
A
Retailer 3
-
$652 NZD
$366 USD
View
A
Retailer 4
-
$652 NZD
$366 USD
View
A
Retailer 5
-
$671 NZD
£297 GBP
View
A
Retailer 6
-
$926 NZD
$520 USD
View
A
Retailer 7
-
$1,067 NZD
$599 USD
View
A
Retailer 8
-
$1,119 NZD
ZAR 10,154 ZAR
View
A
Retailer 9
-
$1,131 NZD
$635 USD
View
A
Retailer 10
-
$1,151 NZD
£509 GBP
View
A
Retailer 11
-
$1,178 NZD
€630 EUR
View
A
Retailer 12
-
$1,515 NZD
A$1,309 AUD
View
A
Retailer 13
-
$1,658 NZD
$931 USD
View
A
Retailer 14
-
$2,179 NZD
$1,224 USD
View
B+
Retailer 15
-
$2,277 NZD
$1,279 USD
View
B+
Retailer 16
-
$2,329 NZD
$1,308 USD
View
B+
Retailer 17
-
$2,329 NZD
SGD 1,768 SGD
View
B+
Retailer 18
-
$2,623 NZD
£1,160 GBP
View
B+
Retailer 19
-
$3,087 NZD
$1,734 USD
View
Retailer 20
-
$4,790 NZD
$2,690 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21433885A · Oct 29
$6,250 NZD
$3,510 USD
View
20 more retailers have this diamond
Prices start from $525 NZDSave up to $5,724 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
1.74ct Radiant
$525 NZD