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Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG784604687

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

Certificate IGI LG784604687

Diamond specifications and retailer prices

From $2,378 NZD
$1,340 USD
As of October 30, 2026
Save $719 NZD (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,096 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784604687 or 784604687. Listed at 2 retailers as of October 30, 2026, with prices from $2,378 to $3,096, a $719 spread on the same certified stone. Blue Nile lists it at $3,096. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784604687
Dimensions7.66 × 5.37 × 3.52 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
7.66 mm5.37 mm1.21 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784604687
Side View
Table 63.0%Crown 41.9°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,096 NZD|Low: $633 NZD|High: $8,126 NZD|Avg: $3,030 NZD
Blue Nile
Retailer 2
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September 28, 2026
Retailer 12$633 NZD
Retailer 10$1,136 NZD
Retailer 11$1,490 NZD
Retailer 9$1,978 NZD
Retailer 8$1,987 NZD
Retailer 16$2,024 NZD
Retailer 6$2,335 NZD
Retailer 2$2,378 NZD
Blue Nile$3,096 NZD
Retailer 14$3,107 NZD
Retailer 15$3,368 NZD
Retailer 5$3,373 NZD
Retailer 13$3,915 NZD
Retailer 4$4,024 NZD
Retailer 7$5,222 NZD
Retailer 3$8,126 NZD

2 data points across 16 retailers

2 retailers$2,378 NZD to $3,096 NZD

B+
Cheapest Retailer
-
$2,378 NZD
$1,340 USD
Most Expensive
B
Blue Nile
29886102 · Oct 31
$3,096 NZD
$1,745 USD
View
1 more retailer has this diamond
Prices start from $2,378 NZDSave up to $719 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+
1.21ct Radiant
$2,378 NZD