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0.31ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG685551322

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685551322

Diamond specifications and retailer prices

From HK$526 HKD
$67 USD
As of October 29, 2026
Save HK$4,287 HKD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$4,813 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685551322 or 685551322. Listed at 12 retailers as of October 29, 2026, with prices from HK$526 to HK$4,813, a HK$4,287 spread on the same certified stone. MOH London lists it at HK$4,813. 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

0.31
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685551322
Dimensions4.42 × 4.46 × 2.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.42 mm4.46 mm0.31 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685551322
Side View
Table 57.0%Crown 32.1°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.1%

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 29
Current: HK$4,813 HKD|Low: HK$526 HKD|High: HK$4,902 HKD|Avg: HK$2,014 HKD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5HK$526 HKD
Retailer 6HK$612 HKD
Retailer 3HK$1,131 HKD
Retailer 2HK$1,351 HKD
Retailer 7HK$1,530 HKD
Retailer 4HK$1,564 HKD
Retailer 10HK$1,961 HKD
Retailer 9HK$2,572 HKD
Retailer 8HK$3,028 HKD
MOH LondonHK$4,813 HKD

42 data points across 10 retailers

12 retailersHK$526 HKD to HK$4,813 HKD

A
Cheapest Retailer
-
HK$526 HKD
$67 USD
A
Retailer 2
-
HK$612 HKD
$78 USD
View
A
Retailer 3
-
HK$690 HKD
$88 USD
View
A
Retailer 4
-
HK$690 HKD
$88 USD
View
A
Retailer 5
-
HK$1,131 HKD
£113 GBP
View
A
Retailer 6
-
HK$1,351 HKD
€164 EUR
View
B+
Retailer 7
-
HK$1,530 HKD
$195 USD
View
A
Retailer 8
-
HK$1,564 HKD
£157 GBP
View
B+
Retailer 9
-
HK$2,095 HKD
$267 USD
View
B
Retailer 10
-
HK$2,572 HKD
$328 USD
View
B
Retailer 11
-
HK$3,028 HKD
$386 USD
View
Most Expensive
B
MOH London
LG685551322 · Oct 29
HK$4,813 HKD
£483 GBP
View
11 more retailers have this diamond
Prices start from HK$526 HKDSave up to HK$4,287 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
0.31ct Round
HK$526 HKD