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Radiant|Lab Grown|IGI

1.31ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG602355231

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

Certificate IGI LG602355231

Diamond specifications and retailer prices

From HK$1,240 HKD
$158 USD
As of October 27, 2026
Save HK$10,686 HKD (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$11,925 HKD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG602355231 or 602355231. Listed at 10 retailers as of October 27, 2026, with prices from HK$1,240 to HK$11,925, a HK$10,686 spread on the same certified stone. Do Amore Diamonds lists it at HK$11,925. 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

1.31
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602355231
Dimensions7.82 × 5.30 × 3.59 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.82 mm5.30 mm1.31 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602355231
Side View
Table 66.0%Crown 42.3°Girdle: MediumPavilion 34°Culet: NoneDepth 67.7%

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$11,925 HKD|Low: HK$1,012 HKD|High: HK$12,945 HKD|Avg: HK$5,428 HKD|+1.3%
Do Amore 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
October 18, 2026
Retailer 7HK$1,240 HKD
Retailer 10HK$1,389 HKD
Retailer 8HK$2,785 HKD
Retailer 3HK$2,885 HKD
Retailer 11HK$3,829 HKD
Retailer 12HK$3,939 HKD
Retailer 5HK$4,295 HKD
Retailer 6HK$5,217 HKD
Retailer 4HK$5,447 HKD
Retailer 13HK$7,061 HKD
Retailer 2HK$7,971 HKD
Retailer 9HK$9,572 HKD
Do Amore DiamondsHK$11,925 HKD

14 data points across 13 retailers

10 retailersHK$1,240 HKD to HK$11,925 HKD

A
Cheapest Retailer
-
HK$1,240 HKD
$158 USD
A
Retailer 2
-
HK$1,389 HKD
$177 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,436 HKD
$183 USD
View
B
Retailer 4
-
HK$2,785 HKD
$355 USD
View
B
Retailer 5
-
HK$5,217 HKD
$665 USD
View
B
Retailer 6
-
HK$5,453 HKD
$695 USD
View
B
Retailer 7
-
HK$7,061 HKD
$900 USD
View
Retailer 8
-
HK$7,971 HKD
£800 GBP
View
Price last confirmed 9 days ago
C
Retailer 9
-
HK$9,572 HKD
$1,220 USD
View
Most Expensive
C
Do Amore Diamonds
27-89282A6CB · Oct 29
HK$11,925 HKD
$1,520 USD
View
9 more retailers have this diamond
Prices start from HK$1,240 HKDSave up to HK$10,686 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 Radiant
HK$1,240 HKD