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Radiant|Lab Grown|IGI

1.78ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG780619896

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

Certificate IGI LG780619896

Diamond specifications and retailer prices

From HK$1,569 HKD
$200 USD
As of November 1, 2026
Save HK$11,926 HKD (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$13,495 HKD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.78ct lab-grown radiant diamond

This 1.78ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG780619896 or 780619896. Listed at 15 retailers as of November 1, 2026, with prices from HK$1,569 to HK$13,495, a HK$11,926 spread on the same certified stone. Do Amore Diamonds lists it at HK$13,495. 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

1.78
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780619896
Dimensions8.34 × 6.27 × 4.19 mm
L/W Ratio1.33
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
8.34 mm6.27 mm1.78 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780619896
Side View
Table 66.0%Crown 37.6°Girdle: MED-STKPavilion 37°Culet: NoneDepth 66.9%

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 1
Current: HK$13,495 HKD|Low: HK$1,459 HKD|High: HK$14,045 HKD|Avg: HK$6,141 HKD|+4.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8HK$1,569 HKD
Retailer 11HK$2,067 HKD
Retailer 7HK$2,377 HKD
Retailer 5HK$3,180 HKD
Retailer 10HK$3,860 HKD
Retailer 2HK$4,998 HKD
Retailer 9HK$6,226 HKD
Retailer 3HK$8,631 HKD
Retailer 4HK$8,978 HKD
Retailer 6HK$9,180 HKD
Do Amore DiamondsHK$13,495 HKD

27 data points across 11 retailers

15 retailersHK$1,569 HKD to HK$13,495 HKD

Retailer 1
-
HK$1,404 HKD
$179 USD
Price last confirmed 31 days ago
A
Retailer 2
-
HK$1,569 HKD
$200 USD
View
Final sale: no returns
Retailer 3
-
HK$1,648 HKD
$210 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
HK$2,067 HKD
$263 USD
View
B+
Retailer 5
-
HK$2,377 HKD
$303 USD
View
A
Retailer 6
-
HK$3,180 HKD
€386 EUR
View
A
Retailer 7
-
HK$3,860 HKD
$492 USD
View
A
Retailer 8
-
HK$4,998 HKD
$637 USD
View
B+
Retailer 9
-
HK$6,226 HKD
$793 USD
View
Retailer 10
-
HK$6,426 HKD
$819 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
HK$7,807 HKD
$995 USD
View
B+
Retailer 12
-
HK$8,631 HKD
$1,100 USD
View
B+
Retailer 13
-
HK$8,978 HKD
£901 GBP
View
B
Retailer 14
-
HK$9,180 HKD
$1,170 USD
View
Most Expensive
B
Do Amore Diamonds
27-93711A3C9 · Nov 2
HK$13,495 HKD
$1,720 USD
View
14 more retailers have this diamond
Prices start from HK$1,569 HKDSave up to HK$11,926 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
1.78ct Radiant
HK$1,569 HKD