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Round|Natural|GIA

1.66ct D VS2 Round Natural Diamond

ID • D/VS2 • GIA 3

Certificate GIA 3

Diamond specifications and retailer prices

From £15,059 GBP
$20,177 USD
As of November 2, 2026
Save £3,002 GBP (17%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £19,552 GBP at Aurelinne · As of September 7, 2026
View at Aurelinne

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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA. Listed at 5 retailers as of October 31, 2026, with a relatively tight 20% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3
Dimensions7.61 × 7.66 × 4.61 mm
L/W Ratio1.01
Top View
7.61 mm7.66 mm1.66 ctD / VS2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £19,552 GBP|Low: £14,902 GBP|High: £19,552 GBP|Avg: £17,191 GBP
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 2£15,059 GBP
Retailer 6£16,108 GBP
Retailer 4£17,380 GBP
Retailer 5£18,061 GBP
Retailer 3£18,828 GBP
Aurelinne£19,552 GBP

5 data points across 6 retailers

5 retailers£15,059 GBP to £18,061 GBP

B+
Cheapest Retailer
-
£15,059 GBP
$20,177 USD
B+
Retailer 2
-
£16,108 GBP
$21,582 USD
View
B
Retailer 3
-
£18,061 GBP
$24,200 USD
View
Retailer 4
-
£18,828 GBP
$25,228 USD
View
Price last confirmed 55 days ago
Most Expensive
Aurelinne
7119c6c7-832c-42cf-bf30-cfa558ae31e7 · Sep 7
£19,552 GBP
$26,198 USD
View
Price last confirmed 56 days ago
4 more retailers have this diamond
Prices start from £15,059 GBPSave up to £3,002 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.

B+
1.66ct Round
£15,059 GBP