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1.64ct E IF Round Natural Diamond

EX • E/IF • GIA 6171266239

Certificate GIA 6171266239

Diamond specifications and retailer prices

From £16,037 GBP
$21,310 USD
As of October 25, 2026
Save £23,914 GBP (60%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £39,952 GBP at Diamond Quarter · As of October 28, 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 £16,037 to £39,952, a £23,914 spread on the same certified stone. Diamond Quarter lists it at £39,952. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £28,878 GBP|Low: £16,037 GBP|High: £29,070 GBP|Avg: £20,094 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 4£16,037 GBP
Retailer 6£16,481 GBP
Retailer 3£18,468 GBP
Retailer 5£18,833 GBP
Retailer 2£22,194 GBP
Retailer 1£28,878 GBP

41 data points across 6 retailers

7 retailers£16,037 GBP to £39,952 GBP

A
Cheapest Retailer
-
£16,037 GBP
$21,310 USD
A
Retailer 2
-
£18,468 GBP
View
B+
Retailer 3
-
£18,833 GBP
A$38,499 AUD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
£20,521 GBP
$27,267 USD
View
B+
Retailer 5
-
£22,194 GBP
€28,086 EUR
View
B
Retailer 6
-
£28,878 GBP
View
Most Expensive
B
Diamond Quarter
1.64IFE6139013CN · Oct 28
£39,952 GBP
View
6 more retailers have this diamond
Prices start from £16,037 GBPSave up to £23,914 GBP

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
£16,037 GBP