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1.66ct L IF Round Natural Diamond

EX • L/IF • GIA 3

Certificate GIA 3

Diamond specifications and retailer prices

From €6,489 EUR
As of November 6, 2026
Save €1,673 EUR (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €8,162 EUR at Blue Nile · As of November 5, 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 L colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of November 5, 2026, with prices from €6,489 to €8,162, a €1,673 spread on the same certified stone. Blue Nile lists it at €8,162. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
L
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 3
Dimensions7.63 × 7.67 × 4.67 mm
L/W Ratio1.01
Top View
7.63 mm7.67 mm1.66 ctL / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 3
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: €8,162 EUR|Low: €6,489 EUR|High: €8,162 EUR|Avg: €7,046 EUR
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2€6,489 EUR
Retailer 3€7,044 EUR
Blue Nile€8,162 EUR

2 data points across 3 retailers

3 retailers€6,489 EUR to €8,162 EUR

B
Cheapest Retailer
-
€6,489 EUR
B
Retailer 2
-
€7,044 EUR
View
Most Expensive
B
Blue Nile
11112580 · Nov 5
€8,162 EUR
$9,113 USD
View
2 more retailers have this diamond
Prices start from €6,489 EURSave up to €1,673 EUR

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.

B
1.66ct Round
€6,489 EUR