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Radiant|Lab Grown|IGI

3.21ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG675532318

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

Certificate IGI LG675532318

Diamond specifications and retailer prices

From $8,677 SGD
$6,770 USD
As of October 29, 2026
6 retailers carry this diamond
Most expensive: $8,677 SGD at Brilliant Earth
View at Brilliant Earth

About this 3.21ct lab-grown radiant diamond

This 3.21ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG675532318 or 675532318. Listed at 6 retailers as of October 29, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.21
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675532318
Dimensions11.09 × 7.43 × 4.74 mm
L/W Ratio1.49
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
11.09 mm7.43 mm3.21 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675532318
Side View
Table 63.0%Crown 37.2°Girdle: MediumPavilion 33.3°Culet: NoneDepth 63.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $8,677 SGD|Low: $1,239 SGD|High: $13,778 SGD|Avg: $5,144 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 19
September 27, 2026
Retailer 18$1,737 SGD
Retailer 15$2,006 SGD
Retailer 14$2,126 SGD
Retailer 7$2,297 SGD
Retailer 4$2,702 SGD
Retailer 2$2,869 SGD
Retailer 3$3,318 SGD
Retailer 9$3,704 SGD
Retailer 16$4,507 SGD
Retailer 19$4,805 SGD
Retailer 6$5,605 SGD
Retailer 17$5,947 SGD
Retailer 12$6,454 SGD
Retailer 8$6,854 SGD
Retailer 13$6,910 SGD
Retailer 10$6,982 SGD
Retailer 11$8,285 SGD
Brilliant Earth$8,677 SGD
Retailer 5$13,778 SGD

12 data points across 19 retailers

6 retailers

Retailer 1
-
$1,688 SGD
$1,317 USD
Price last confirmed 32 days ago
Retailer 2
-
$1,775 SGD
$1,385 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$2,297 SGD
HK$14,000 HKD
View
Price last confirmed 56 days ago
Retailer 4
-
$4,507 SGD
ZAR 56,802 ZAR
View
Price last confirmed 38 days ago
Retailer 5
-
$6,854 SGD
$5,348 USD
View
Price last confirmed 54 days ago
Most Expensive
B
Brilliant Earth
21305180Y · Oct 29
$8,677 SGD
$6,770 USD
View
5 more retailers have this diamond

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
3.21ct Radiant
$8,677 SGD