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Radiant|Lab Grown|IGI

1.00ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG500148420

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

Certificate IGI LG500148420

Diamond specifications and retailer prices

From $1,123 NZD
$632 USD
As of November 2, 2026
Save $1,004 NZD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,327 NZD at Friendly Diamonds · As of November 2, 2026
View at Friendly Diamonds

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG500148420 or 500148420. Listed at 12 retailers as of November 1, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle41.2°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500148420
Dimensions6.84 × 4.94 × 3.44 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.84 mm4.94 mm1.00 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG500148420
Side View
Table 63.5%Crown 41.2°Girdle: THN-MEDPavilion 31.9°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,327 NZD|Low: $1,077 NZD|High: $5,553 NZD|Avg: $2,194 NZD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$1,123 NZD
Retailer 11$1,221 NZD
Retailer 3$1,257 NZD
Retailer 8$1,303 NZD
Retailer 7$1,564 NZD
Retailer 4$1,617 NZD
Retailer 2$2,079 NZD
Retailer 10$2,127 NZD
Friendly Diamonds$3,327 NZD
Retailer 9$3,661 NZD
Retailer 5$5,494 NZD

43 data points across 11 retailers

12 retailers$1,123 NZD to $2,127 NZD

B
Cheapest Retailer
-
$1,123 NZD
$632 USD
B
Retailer 2
-
$1,221 NZD
$687 USD
View
B
Retailer 3
-
$1,257 NZD
$707 USD
View
Final sale: no returns
Retailer 4
-
$1,303 NZD
$733 USD
View
Price last confirmed 17 days ago
B
Retailer 5
-
$1,303 NZD
$733 USD
View
B
Retailer 6
-
$1,564 NZD
$880 USD
View
B
Retailer 7
-
$1,617 NZD
$910 USD
View
B
Retailer 8
-
$2,079 NZD
£921 GBP
View
C
Retailer 9
-
$2,127 NZD
$1,197 USD
View
Most Expensive
Friendly Diamonds
1590590 · Nov 2
$3,327 NZD
$1,872 USD
View
Price under review
9 more retailers have this diamond
Prices start from $1,123 NZDSave up to $1,004 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.

B
1.00ct Radiant
$1,123 NZD