Radiant|Lab Grown|IGI

0.91ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG311690150

Shape and cutting style on the report: Radiant brilliant

Certificate IGI LG311690150

Diamond specifications and retailer prices

From $207 USD
As of October 27, 2026
Save $702 USD (77%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $909 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 0.91ct lab-grown radiant diamond

This 0.91ct lab-grown radiant sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG311690150 or 311690150. Listed at 5 retailers as of October 27, 2026, with prices from $207 to $909, a $702 spread on the same certified stone. NZ Jewellers lists it at $909. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle59°
OriginLab Grown
Grading LabIGI
CertificateIGI LG311690150
Dimensions6.84 × 4.88 × 3.02 mm
L/W Ratio1.40
Culet sizeNone
Top View
6.84 mm4.88 mm0.91 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG311690150
Side View
Table 64.0%Crown 39.5°Girdle: MED-MEDPavilion 59°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 27
Current: $909 USD|Low: $203 USD|High: $1,028 USD|Avg: $575 USD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 4$207 USD
Retailer 3$240 USD
Retailer 2$256 USD
Retailer 6$770 USD
NZ Jewellers$909 USD
Retailer 5$1,023 USD

18 data points across 6 retailers

5 retailers$207 USD to $909 USD

A
Cheapest Retailer
-
$207 USD
A
Retailer 2
-
$240 USD
View
A
Retailer 3
-
$256 USD
View
B
Retailer 4
-
$770 USD
View
Most Expensive
B
NZ Jewellers
0be93489-e4d7-4ea8-a19c-7886da319dc8 · Oct 28
$909 USD
View
4 more retailers have this diamond
Prices start from $207 USDSave up to $702 USD

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
0.91ct Radiant
$207 USD