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Radiant|Lab Grown|IGI

1.76ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG639405820

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

Certificate IGI LG639405820

Diamond specifications and retailer prices

From $3,850 NZD
As of November 4, 2026
Save $1,070 NZD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $7,007 NZD at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 1.76ct lab-grown radiant diamond

This 1.76ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG639405820 or 639405820. Listed at 4 retailers as of November 4, 2026, with a 28% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.76
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle29.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639405820
Dimensions8.96 × 5.88 × 3.80 mm
L/W Ratio1.52
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
8.96 mm5.88 mm1.76 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639405820
Side View
Table 66.0%Crown 41.7°Girdle: MediumPavilion 29.8°Culet: NoneDepth 64.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $7,007 NZD|Low: $1,476 NZD|High: $7,238 NZD|Avg: $3,763 NZD|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 11$1,694 NZD
Retailer 8$1,794 NZD
Retailer 7$2,173 NZD
Retailer 6$2,792 NZD
Retailer 5$2,936 NZD
Retailer 9$3,665 NZD
Retailer 2$3,850 NZD
Retailer 4$4,919 NZD
Retailer 3$5,913 NZD
Retailer 10$6,748 NZD
Brilliant Earth$7,007 NZD

7 data points across 11 retailers

4 retailers$3,850 NZD to $4,919 NZD

Retailer 1
-
$2,936 NZD
Price last confirmed 18 days ago
B
Retailer 2
-
$3,850 NZD
View
B
Retailer 3
-
$4,919 NZD
View
Most Expensive
Brilliant Earth
17792853Y · Oct 18
$7,007 NZD
$3,950 USD
View
Price last confirmed 17 days ago
3 more retailers have this diamond
Prices start from $3,850 NZDSave up to $1,070 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.

B
1.76ct Radiant
$3,850 NZD