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Round|Lab Grown|IGI

1.31ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG831623401

Shape and cutting style on the report: Round brilliant

Certificate IGI LG831623401

Diamond specifications and retailer prices

From HK$2,704 HKD
As of November 6, 2026
Save HK$11,952 HKD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$14,656 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.31ct lab-grown round diamond

This 1.31ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831623401 or 831623401. Listed at 11 retailers as of October 31, 2026, with prices from HK$2,704 to HK$14,656, a HK$11,952 spread on the same certified stone. Brilliant Earth lists it at HK$14,656. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623401
Dimensions7.02 × 6.99 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.02 mm6.99 mm1.31 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623401
Side View
Table 58.0%Crown 35.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

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: Nov 6
Current: HK$14,656 HKD|Low: HK$1,999 HKD|High: HK$14,891 HKD|Avg: HK$5,775 HKD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9HK$1,999 HKD
Retailer 10HK$2,704 HKD
Retailer 2HK$3,386 HKD
Retailer 4HK$3,613 HKD
Retailer 6HK$3,660 HKD
Retailer 11HK$3,942 HKD
Retailer 3HK$4,060 HKD
Retailer 5HK$4,867 HKD
Retailer 7HK$9,374 HKD
Retailer 8HK$11,874 HKD
Brilliant EarthHK$14,656 HKD

43 data points across 11 retailers

11 retailersHK$2,704 HKD to HK$14,656 HKD

Retailer 1
-
HK$1,999 HKD
Price last confirmed 12 days ago
B+
Retailer 2
-
HK$2,704 HKD
View
A
Retailer 3
-
HK$3,386 HKD
View
A
Retailer 4
-
HK$3,613 HKD
View
Retailer 5
-
HK$3,660 HKD
View
Price last confirmed 8 days ago
A
Retailer 6
-
HK$3,942 HKD
View
A
Retailer 7
-
HK$4,060 HKD
View
B+
Retailer 8
-
HK$4,867 HKD
View
Retailer 9
-
HK$9,374 HKD
View
Price last confirmed 11 days ago
B
Retailer 10
-
HK$11,874 HKD
View
Most Expensive
B
Brilliant Earth
21450031A · Oct 31
HK$14,656 HKD
$1,870 USD
View
10 more retailers have this diamond
Prices start from HK$2,704 HKDSave up to HK$11,952 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
1.31ct Round
HK$2,704 HKD