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Radiant|Lab Grown|IGI

0.90ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG510190405

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

Certificate IGI LG510190405

Diamond specifications and retailer prices

From $1,020 NZD
£453 GBP
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $1,080 NZD at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 0.9ct lab-grown radiant diamond

This 0.9ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG510190405 or 510190405. Listed at 2 retailers as of October 31, 2026. 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

0.90
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510190405
Dimensions6.43 × 4.74 × 3.36 mm
L/W Ratio1.36
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
6.43 mm4.74 mm0.90 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510190405
Side View
Table 63.5%Crown 41°Girdle: MED-STKPavilion 33.9°Culet: NoneDepth 70.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $1,080 NZD|Low: $179 NZD|High: $1,709 NZD|Avg: $701 NZD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 7, 2026
Retailer 11$179 NZD
Retailer 8$381 NZD
Retailer 4$449 NZD
Retailer 2$472 NZD
Retailer 9$492 NZD
Retailer 6$597 NZD
Retailer 7$697 NZD
Retailer 10$703 NZD
Rare Carat$1,080 NZD
Retailer 5$1,473 NZD
Retailer 3$1,709 NZD

76 data points across 11 retailers

2 retailers

B
Cheapest Retailer
-
$1,020 NZD
£453 GBP
Most Expensive
Rare Carat
Z209-2000_l_510190405 · Aug 9
$1,080 NZD
$609 USD
View
Price last confirmed 83 days ago
1 more retailer has this diamond
Prices start from $1,020 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
0.90ct Radiant
$1,020 NZD