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Radiant|Lab Grown|IGI

0.81ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG648465420

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

Certificate IGI LG648465420

Diamond specifications and retailer prices

From HK$981 HKD
$125 USD
As of October 30, 2026
Save HK$3,146 HKD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$4,127 HKD at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

About this 0.81ct lab-grown radiant diamond

This 0.81ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648465420 or 648465420. Listed at 13 retailers as of October 30, 2026, with prices from HK$981 to HK$4,127, a HK$3,146 spread on the same certified stone. Friendly Diamonds lists it at HK$4,127. 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

0.81
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.8°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648465420
Dimensions6.43 × 4.60 × 3.10 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.43 mm4.60 mm0.81 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648465420
Side View
Table 67.0%Crown 46.8°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 67.4%

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 30
Current: HK$4,127 HKD|Low: HK$981 HKD|High: HK$5,884 HKD|Avg: HK$2,558 HKD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 10HK$981 HKD
Retailer 6HK$1,138 HKD
Retailer 12HK$1,295 HKD
Retailer 5HK$1,406 HKD
Retailer 11HK$1,764 HKD
Retailer 16HK$1,859 HKD
Retailer 9HK$2,001 HKD
Retailer 15HK$2,001 HKD
Retailer 2HK$2,175 HKD
Retailer 3HK$2,330 HKD
Retailer 4HK$2,501 HKD
Retailer 13HK$3,091 HKD
Retailer 14HK$3,907 HKD
Friendly DiamondsHK$4,127 HKD
Retailer 7HK$4,836 HKD
Retailer 8HK$5,884 HKD

4 data points across 16 retailers

13 retailersHK$981 HKD to HK$4,127 HKD

A
Cheapest Retailer
-
HK$981 HKD
$125 USD
A
Retailer 2
-
HK$1,138 HKD
$145 USD
View
A
Retailer 3
-
HK$1,295 HKD
$165 USD
View
A
Retailer 4
-
HK$1,406 HKD
View
A
Retailer 5
-
HK$1,764 HKD
£177 GBP
View
A
Retailer 6
-
HK$1,859 HKD
$237 USD
View
A
Retailer 7
-
HK$2,001 HKD
£201 GBP
View
A
Retailer 8
-
HK$2,175 HKD
€264 EUR
View
B+
Retailer 9
-
HK$2,330 HKD
$297 USD
View
B+
Retailer 10
-
HK$2,501 HKD
£251 GBP
View
B+
Retailer 11
-
HK$3,091 HKD
$394 USD
View
B
Retailer 12
-
HK$3,907 HKD
$498 USD
View
Most Expensive
B
Friendly Diamonds
6558455 · Oct 31
HK$4,127 HKD
$526 USD
View
12 more retailers have this diamond
Prices start from HK$981 HKDSave up to HK$3,146 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
0.81ct Radiant
HK$981 HKD