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Radiant|Lab Grown|IGI

3.51ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG660405323

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

Certificate IGI LG660405323

Diamond specifications and retailer prices

From HK$3,750 HKD
$478 USD
As of October 30, 2026
Save HK$13,438 HKD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$17,188 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 3.51ct lab-grown radiant diamond

This 3.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG660405323 or 660405323. Listed at 16 retailers as of October 29, 2026, with prices from HK$3,750 to HK$17,188, a HK$13,438 spread on the same certified stone. MOH London lists it at HK$17,188. 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

3.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle28.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660405323
Dimensions10.40 × 7.19 × 5.03 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.40 mm7.19 mm3.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660405323
Side View
Table 63.0%Crown 42.9°Girdle: MED-STKPavilion 28.7°Culet: NoneDepth 70.0%

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 30
Current: HK$17,188 HKD|Low: HK$3,601 HKD|High: HK$17,298 HKD|Avg: HK$8,620 HKD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 9HK$3,750 HKD
Retailer 3HK$4,197 HKD
Retailer 4HK$4,205 HKD
Retailer 10HK$4,653 HKD
Retailer 7HK$5,767 HKD
Retailer 6HK$6,365 HKD
Retailer 5HK$7,116 HKD
Retailer 13HK$7,265 HKD
Retailer 2HK$7,726 HKD
Retailer 8HK$12,506 HKD
Retailer 12HK$14,962 HKD
Retailer 11HK$16,334 HKD
MOH LondonHK$17,188 HKD

42 data points across 13 retailers

16 retailersHK$3,750 HKD to HK$17,188 HKD

A
Cheapest Retailer
-
HK$3,750 HKD
$478 USD
A
Retailer 2
-
HK$4,197 HKD
$535 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,205 HKD
$536 USD
View
A
Retailer 4
-
HK$4,653 HKD
$593 USD
View
Retailer 5
-
HK$4,653 HKD
$593 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
HK$5,767 HKD
$735 USD
View
A
Retailer 7
-
HK$6,365 HKD
£639 GBP
View
B+
Retailer 8
-
HK$7,116 HKD
$907 USD
View
B+
Retailer 9
-
HK$7,265 HKD
$926 USD
View
A
Retailer 10
-
HK$7,726 HKD
£775 GBP
View
B
Retailer 11
-
HK$12,506 HKD
$1,594 USD
View
B
Retailer 12
-
HK$13,589 HKD
$1,732 USD
View
B
Retailer 13
-
HK$14,962 HKD
$1,907 USD
View
B
Retailer 14
-
HK$15,186 HKD
$1,936 USD
View
B
Retailer 15
-
HK$16,334 HKD
$2,082 USD
View
Most Expensive
B
MOH London
LG660405323 · Oct 29
HK$17,188 HKD
£1,725 GBP
View
15 more retailers have this diamond
Prices start from HK$3,750 HKDSave up to HK$13,438 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
3.51ct Radiant
HK$3,750 HKD