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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG654418105

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

Certificate IGI LG654418105

Diamond specifications and retailer prices

From $536 SGD
$419 USD
As of October 30, 2026
Save $1,950 SGD (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,985 SGD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.51ct lab-grown radiant diamond

This 1.51ct 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 LG654418105 or 654418105. Listed at 25 retailers as of October 30, 2026, with a 364% 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

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654418105
Dimensions8.05 × 5.68 × 3.83 mm
L/W Ratio1.42
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
8.05 mm5.68 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654418105
Side View
Table 66.0%Crown 40.5°Girdle: MediumPavilion 33.9°Culet: NoneDepth 67.4%

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: $2,985 SGD|Low: $514 SGD|High: $3,030 SGD|Avg: $1,392 SGD|-1.5%
Rare Carat
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
Retailer 19
October 31, 2026
Retailer 19$536 SGD
Retailer 6$600 SGD
Retailer 10$600 SGD
Retailer 4$663 SGD
Retailer 7$663 SGD
Retailer 17$850 SGD
Retailer 9$972 SGD
Retailer 13$1,047 SGD
Retailer 12$1,094 SGD
Retailer 2$1,103 SGD
Retailer 16$1,141 SGD
Retailer 14$1,546 SGD
Retailer 18$1,863 SGD
Retailer 11$1,929 SGD
Retailer 8$2,112 SGD
Retailer 5$2,135 SGD
Retailer 3$2,432 SGD
Retailer 15$2,452 SGD
Rare Carat$2,985 SGD

44 data points across 19 retailers

25 retailers$536 SGD to $2,485 SGD

A
Cheapest Retailer
-
$536 SGD
$419 USD
A
Retailer 2
-
$600 SGD
$469 USD
View
Final sale: no returns
A
Retailer 3
-
$600 SGD
$469 USD
View
A
Retailer 4
-
$663 SGD
$519 USD
View
A
Retailer 5
-
$663 SGD
$519 USD
View
A
Retailer 6
-
$736 SGD
HK$4,500 HKD
View
A
Retailer 7
-
$850 SGD
$665 USD
View
A
Retailer 8
-
$972 SGD
$760 USD
View
A
Retailer 9
-
$1,047 SGD
$819 USD
View
A
Retailer 10
-
$1,094 SGD
£674 GBP
View
A
Retailer 11
-
$1,103 SGD
€822 EUR
View
A
Retailer 12
-
$1,141 SGD
ZAR 14,419 ZAR
View
B+
Retailer 13
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$1,353 SGD
$1,058 USD
View
B+
Retailer 14
-
$1,546 SGD
A$1,861 AUD
View
B+
Retailer 15
-
$1,722 SGD
£1,061 GBP
View
B+
Retailer 16
-
$1,863 SGD
$1,457 USD
View
B+
Retailer 17
-
$1,929 SGD
£1,188 GBP
View
B+
Retailer 18
-
$2,112 SGD
View
B+
Retailer 19
-
$2,135 SGD
$1,670 USD
View
B
Retailer 20
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$2,177 SGD
$1,703 USD
View
B
Retailer 21
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$2,419 SGD
$1,892 USD
View
B
Retailer 22
-
$2,432 SGD
$1,902 USD
View
B+
Retailer 23
-
$2,452 SGD
£1,510 GBP
View
B
Retailer 24
-
$2,485 SGD
$1,944 USD
View
Most Expensive
Rare Carat
197B56-7A · Oct 18
$2,985 SGD
$2,335 USD
View
Price last confirmed 13 days ago
24 more retailers have this diamond
Prices start from $536 SGDSave up to $1,950 SGD

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
1.51ct Radiant
$536 SGD