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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 HK$1,624 HKD
$207 USD
As of October 27, 2026
Save HK$5,508 HKD (77%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$7,132 HKD 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 HK$1,624 to HK$7,132, a HK$5,508 spread on the same certified stone. NZ Jewellers lists it at HK$7,132. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: HK$7,132 HKD|Low: HK$1,593 HKD|High: HK$8,066 HKD|Avg: HK$4,515 HKD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 4HK$1,624 HKD
Retailer 3HK$1,883 HKD
Retailer 2HK$2,009 HKD
Retailer 6HK$6,042 HKD
NZ JewellersHK$7,132 HKD
Retailer 5HK$8,027 HKD

18 data points across 6 retailers

5 retailersHK$1,624 HKD to HK$7,132 HKD

A
Cheapest Retailer
-
HK$1,624 HKD
$207 USD
A
Retailer 2
-
HK$1,883 HKD
$240 USD
View
A
Retailer 3
-
HK$2,009 HKD
$256 USD
View
B
Retailer 4
-
HK$6,042 HKD
$770 USD
View
Most Expensive
B
NZ Jewellers
0be93489-e4d7-4ea8-a19c-7886da319dc8 · Oct 28
HK$7,132 HKD
$909 USD
View
4 more retailers have this diamond
Prices start from HK$1,624 HKDSave up to HK$5,508 HKD

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
HK$1,624 HKD