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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 $357 NZD
$201 USD
As of October 30, 2026
Save $1,989 NZD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,346 NZD 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 $357 to $2,346, a $1,989 spread on the same certified stone. Brilliant Earth lists it at $2,346. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,346 NZD|Low: $347 NZD|High: $2,737 NZD|Avg: $1,108 NZD|-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$357 NZD
Retailer 14$398 NZD
Retailer 8$416 NZD
Retailer 20$443 NZD
Retailer 11$446 NZD
Retailer 5$765 NZD
Retailer 16$770 NZD
Retailer 17$812 NZD
Retailer 9$969 NZD
Retailer 13$1,036 NZD
Retailer 6$1,039 NZD
Retailer 2$1,153 NZD
Retailer 12$1,433 NZD
Retailer 10$1,447 NZD
Retailer 19$1,519 NZD
Retailer 3$1,576 NZD
Retailer 4$1,751 NZD
Retailer 18$1,781 NZD
Retailer 7$2,086 NZD
Brilliant Earth$2,346 NZD

28 data points across 20 retailers

21 retailers$357 NZD to $2,346 NZD

A
Cheapest Retailer
-
$357 NZD
$201 USD
A
Retailer 2
-
$398 NZD
$224 USD
View
Final sale: no returns
A
Retailer 3
-
$416 NZD
$234 USD
View
A
Retailer 4
-
$443 NZD
$249 USD
View
Retailer 5
-
$446 NZD
$251 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$765 NZD
ZAR 6,954 ZAR
View
B+
Retailer 7
-
$770 NZD
$433 USD
View
A
Retailer 8
-
$812 NZD
£360 GBP
View
A
Retailer 9
-
$969 NZD
$545 USD
View
A
Retailer 10
-
$1,036 NZD
$583 USD
View
Retailer 11
-
$1,039 NZD
A$899 AUD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$1,153 NZD
$649 USD
View
B+
Retailer 13
-
$1,433 NZD
$806 USD
View
B+
Retailer 14
-
$1,447 NZD
SGD 1,100 SGD
View
B+
Retailer 15
-
$1,519 NZD
$855 USD
View
B+
Retailer 16
-
$1,576 NZD
A$1,364 AUD
View
B+
Retailer 17
-
$1,751 NZD
$985 USD
View
B+
Retailer 18
-
$1,781 NZD
$1,002 USD
View
B
Retailer 19
-
$1,825 NZD
$1,027 USD
View
Retailer 20
-
$2,086 NZD
£924 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21501264A · Oct 30
$2,346 NZD
$1,320 USD
View
20 more retailers have this diamond
Prices start from $357 NZDSave up to $1,989 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.

A
1.58ct Radiant
$357 NZD