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Round|Natural|GIA

1.66ct D IF Round Natural Diamond

ID • D/IF • GIA 619

Certificate GIA 619

Diamond specifications and retailer prices

From HK$189,499 HKD
$24,152 USD
As of November 2, 2026
Save HK$34,578 HKD (15%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$224,077 HKD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.66ct natural round diamond

This 1.66ct natural 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 GIA. Listed at 3 retailers as of October 31, 2026, with prices from HK$189,499 to HK$224,077, a HK$34,578 spread on the same certified stone. Blue Nile lists it at HK$224,077. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 619
Dimensions7.63 × 7.66 × 4.66 mm
L/W Ratio1.00
Top View
7.63 mm7.66 mm1.66 ctD / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 619
Side View
Table 57.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$224,077 HKD|Low: HK$189,499 HKD|High: HK$224,077 HKD|Avg: HK$208,154 HKD
Blue Nile
Retailer 2
Retailer 3
October 9, 2026
Retailer 2HK$189,499 HKD
Retailer 3HK$203,758 HKD
Blue NileHK$224,077 HKD

3 data points across 3 retailers

3 retailersHK$189,499 HKD to HK$224,077 HKD

A
Cheapest Retailer
-
HK$189,499 HKD
$24,152 USD
B+
Retailer 2
-
HK$203,758 HKD
$25,969 USD
View
Most Expensive
B+
Blue Nile
26210850 · Oct 31
HK$224,077 HKD
$28,559 USD
View
2 more retailers have this diamond
Prices start from HK$189,499 HKDSave up to HK$34,578 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
1.66ct Round
HK$189,499 HKD