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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 $287 AUD
$201 USD
As of October 30, 2026
Save $1,597 AUD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,884 AUD 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 $287 to $1,884, a $1,597 spread on the same certified stone. Brilliant Earth lists it at $1,884. 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: $1,884 AUD|Low: $278 AUD|High: $2,197 AUD|Avg: $890 AUD|-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$287 AUD
Retailer 14$320 AUD
Retailer 8$334 AUD
Retailer 20$355 AUD
Retailer 11$358 AUD
Retailer 5$614 AUD
Retailer 16$618 AUD
Retailer 17$652 AUD
Retailer 9$778 AUD
Retailer 13$832 AUD
Retailer 6$834 AUD
Retailer 2$926 AUD
Retailer 12$1,150 AUD
Retailer 10$1,161 AUD
Retailer 19$1,219 AUD
Retailer 3$1,265 AUD
Retailer 4$1,405 AUD
Retailer 18$1,430 AUD
Retailer 7$1,674 AUD
Brilliant Earth$1,884 AUD

28 data points across 20 retailers

21 retailers$287 AUD to $1,884 AUD

A
Cheapest Retailer
-
$287 AUD
$201 USD
A
Retailer 2
-
$320 AUD
$224 USD
View
Final sale: no returns
A
Retailer 3
-
$334 AUD
$234 USD
View
A
Retailer 4
-
$355 AUD
$249 USD
View
Retailer 5
-
$358 AUD
$251 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$614 AUD
ZAR 6,954 ZAR
View
B+
Retailer 7
-
$618 AUD
$433 USD
View
A
Retailer 8
-
$652 AUD
£360 GBP
View
A
Retailer 9
-
$778 AUD
$545 USD
View
A
Retailer 10
-
$832 AUD
$583 USD
View
A
Retailer 11
-
$834 AUD
View
B+
Retailer 12
-
$926 AUD
$649 USD
View
B+
Retailer 13
-
$1,150 AUD
$806 USD
View
B+
Retailer 14
-
$1,161 AUD
SGD 1,100 SGD
View
B+
Retailer 15
-
$1,219 AUD
$855 USD
View
B+
Retailer 16
-
$1,265 AUD
View
B+
Retailer 17
-
$1,405 AUD
$985 USD
View
B+
Retailer 18
-
$1,430 AUD
$1,002 USD
View
B
Retailer 19
-
$1,465 AUD
$1,027 USD
View
Retailer 20
-
$1,674 AUD
£924 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21501264A · Oct 30
$1,884 AUD
$1,320 USD
View
20 more retailers have this diamond
Prices start from $287 AUDSave up to $1,597 AUD

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
$287 AUD