Round|Natural|GIA

1.64ct E IF Round Natural Diamond

EX • E/IF • GIA 6171266239

Certificate GIA 6171266239

Diamond specifications and retailer prices

From €19,074 EUR
$21,310 USD
As of October 25, 2026
Save €28,443 EUR (60%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €47,517 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.64ct natural round diamond

This 1.64ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6171266239. Listed at 7 retailers as of October 25, 2026, with prices from €19,074 to €47,517, a €28,443 spread on the same certified stone. Diamond Quarter lists it at €47,517. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6171266239
Dimensions7.59 × 7.56 × 4.63 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.59 mm7.56 mm1.64 ctE / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6171266239
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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 25
Current: €22,064 EUR|Low: €19,074 EUR|High: €34,575 EUR|Avg: €24,172 EUR|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4€19,074 EUR
Retailer 6€19,602 EUR
Retailer 1€22,064 EUR
Retailer 5€22,399 EUR
Retailer 2€26,542 EUR
Retailer 3€34,346 EUR

41 data points across 6 retailers

7 retailers€19,074 EUR to €47,517 EUR

A
Cheapest Retailer
-
€19,074 EUR
$21,310 USD
A
Retailer 2
-
€22,064 EUR
£19,410 GBP
View
Retailer 3
-
€22,399 EUR
A$38,499 AUD
View
Price last confirmed 28 days ago
B+
Retailer 4
-
€24,407 EUR
$27,267 USD
View
B+
Retailer 5
-
€26,542 EUR
View
B
Retailer 6
-
€34,346 EUR
£30,214 GBP
View
Most Expensive
B
Diamond Quarter
1.64IFE6139013CN · Oct 31
€47,517 EUR
£41,800 GBP
View
6 more retailers have this diamond
Prices start from €19,074 EURSave up to €28,443 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.

A
1.64ct Round
€19,074 EUR