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Round|Lab Grown|IGI

1.68ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG780668507

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780668507

Diamond specifications and retailer prices

From HK$4,958 HKD
$632 USD
As of October 30, 2026
Save HK$14,224 HKD (74%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$19,183 HKD at Rare Carat · As of October 25, 2026
View at Rare Carat

About this 1.68ct lab-grown round diamond

This 1.68ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780668507 or 780668507. Listed at 8 retailers as of October 25, 2026, with prices from HK$4,958 to HK$19,183, a HK$14,224 spread on the same certified stone. Rare Carat lists it at HK$19,183. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780668507
Dimensions7.71 × 7.67 × 4.68 mm
L/W Ratio1.01
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
7.71 mm7.67 mm1.68 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780668507
Side View
Table 57.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.8%

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: Oct 30
Current: HK$19,183 HKD|Low: HK$4,958 HKD|High: HK$19,575 HKD|Avg: HK$10,328 HKD|-2.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6HK$4,958 HKD
Retailer 4HK$5,684 HKD
Retailer 2HK$6,347 HKD
Retailer 3HK$8,724 HKD
Retailer 7HK$9,219 HKD
Retailer 8HK$11,661 HKD
Retailer 5HK$13,860 HKD
Rare CaratHK$19,183 HKD

38 data points across 8 retailers

8 retailersHK$4,958 HKD to HK$19,183 HKD

A
Cheapest Retailer
-
HK$4,958 HKD
$632 USD
A
Retailer 2
-
HK$5,684 HKD
€690 EUR
View
A
Retailer 3
-
HK$6,347 HKD
£637 GBP
View
B+
Retailer 4
-
HK$8,724 HKD
$1,112 USD
View
B+
Retailer 5
-
HK$9,219 HKD
$1,175 USD
View
B+
Retailer 6
-
HK$11,661 HKD
$1,486 USD
View
B+
Retailer 7
-
HK$13,860 HKD
£1,391 GBP
View
Most Expensive
B
Rare Carat
C91-4A · Oct 25
HK$19,183 HKD
$2,445 USD
View
7 more retailers have this diamond
Prices start from HK$4,958 HKDSave up to HK$14,224 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
1.68ct Round
HK$4,958 HKD