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Radiant|Lab Grown|IGI

1.58ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG778670775

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

Certificate IGI LG778670775

Diamond specifications and retailer prices

From $257 SGD
$201 USD
As of October 30, 2026
Save $1,431 SGD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,687 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.58ct lab-grown radiant diamond

This 1.58ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778670775 or 778670775. Listed at 21 retailers as of October 30, 2026, with prices from $257 to $1,687, a $1,431 spread on the same certified stone. Brilliant Earth lists it at $1,687. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778670775
Dimensions8.35 × 3.62 mm
L/W Ratio2.31
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.35 mm3.62 mm1.58 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778670775
Side View
Table 70.0%Crown 44.9°Girdle: STK-THKPavilion 32°Culet: NoneDepth 62.0%

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: $1,687 SGD|Low: $249 SGD|High: $1,969 SGD|Avg: $797 SGD|-13.7%
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
Retailer 19
Retailer 20
October 31, 2026
Retailer 15$257 SGD
Retailer 14$286 SGD
Retailer 8$299 SGD
Retailer 20$318 SGD
Retailer 11$321 SGD
Retailer 5$550 SGD
Retailer 16$554 SGD
Retailer 17$584 SGD
Retailer 9$697 SGD
Retailer 13$745 SGD
Retailer 6$747 SGD
Retailer 2$830 SGD
Retailer 12$1,030 SGD
Retailer 10$1,041 SGD
Retailer 19$1,092 SGD
Retailer 3$1,133 SGD
Retailer 4$1,259 SGD
Retailer 18$1,281 SGD
Retailer 7$1,500 SGD
Brilliant Earth$1,687 SGD

28 data points across 20 retailers

21 retailers$257 SGD to $1,687 SGD

A
Cheapest Retailer
-
$257 SGD
$201 USD
A
Retailer 2
-
$286 SGD
$224 USD
View
Final sale: no returns
A
Retailer 3
-
$299 SGD
$234 USD
View
A
Retailer 4
-
$318 SGD
$249 USD
View
Retailer 5
-
$321 SGD
$251 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$550 SGD
ZAR 6,954 ZAR
View
B+
Retailer 7
-
$554 SGD
$433 USD
View
A
Retailer 8
-
$584 SGD
£360 GBP
View
A
Retailer 9
-
$697 SGD
$545 USD
View
A
Retailer 10
-
$745 SGD
$583 USD
View
A
Retailer 11
-
$747 SGD
A$899 AUD
View
B+
Retailer 12
-
$830 SGD
$649 USD
View
B+
Retailer 13
-
$1,030 SGD
$806 USD
View
B+
Retailer 14
-
$1,041 SGD
View
B+
Retailer 15
-
$1,092 SGD
$855 USD
View
B+
Retailer 16
-
$1,133 SGD
A$1,364 AUD
View
B+
Retailer 17
-
$1,259 SGD
$985 USD
View
B+
Retailer 18
-
$1,281 SGD
$1,002 USD
View
B
Retailer 19
-
$1,313 SGD
$1,027 USD
View
Retailer 20
-
$1,500 SGD
£924 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21501264A · Oct 30
$1,687 SGD
$1,320 USD
View
20 more retailers have this diamond
Prices start from $257 SGDSave up to $1,431 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
1.58ct Radiant
$257 SGD