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Radiant|Lab Grown|IGI

1.05ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG492136441

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

Certificate IGI LG492136441

Diamond specifications and retailer prices

From $1,674 NZD
$940 USD
As of October 29, 2026
Save $707 NZD (30%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,381 NZD at Loose Grown Diamond · As of October 28, 2026
View at Loose Grown Diamond

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG492136441 or 492136441. Listed at 5 retailers as of October 28, 2026, with prices from $1,674 to $2,381, a $707 spread on the same certified stone. Loose Grown Diamond lists it at $2,381. 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

1.05
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492136441
Dimensions7.10 × 4.98 × 3.44 mm
L/W Ratio1.43
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
7.10 mm4.98 mm1.05 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492136441
Side View
Table 65.5%Crown 40.2°Girdle: MediumPavilion 32.1°Culet: NoneDepth 69.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,381 NZD|Low: $1,674 NZD|High: $5,823 NZD|Avg: $3,041 NZD|+1.9%
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4$1,674 NZD
Retailer 5$2,313 NZD
Retailer 2$2,349 NZD
Loose Grown Diamond$2,381 NZD
Retailer 6$4,197 NZD
Retailer 3$5,762 NZD

42 data points across 6 retailers

5 retailers$1,674 NZD to $2,381 NZD

B
Cheapest Retailer
-
$1,674 NZD
$940 USD
B
Retailer 2
-
$2,349 NZD
£1,039 GBP
View
Most Expensive
C
Loose Grown Diamond
492136441 · Oct 28
$2,381 NZD
$1,337 USD
View
2 more retailers have this diamond
Prices start from $1,674 NZDSave up to $707 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
1.05ct Radiant
$1,674 NZD