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Round|Natural|GIA

0.66ct N SI2 Round Natural Diamond

VG • N/SI2 • GIA 5192631919

Certificate GIA 5192631919

Diamond specifications and retailer prices

From £354 GBP
As of November 5, 2026
Save £871 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,225 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded N colour (tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 5192631919. Listed at 7 retailers as of November 4, 2026, with prices from £354 to £1,225, a £871 spread on the same certified stone. NZ Jewellers lists it at £1,225. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.66
Carat
N
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5192631919
Dimensions5.65 × 5.66 × 3.45 mm
L/W Ratio1.00
Star length55%
Lower girdle85%
Top View
5.65 mm5.66 mm0.66 ctN / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5192631919
Side View
Table 57.0%Crown 35°Girdle: THN-MEDPavilion 41°Culet: Very SmallDepth 60.9%

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 5
Current: £1,225 GBP|Low: £302 GBP|High: £1,225 GBP|Avg: £523 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8£302 GBP
Retailer 4£354 GBP
Retailer 3£381 GBP
Retailer 6£381 GBP
Retailer 5£409 GBP
Retailer 7£536 GBP
Retailer 2£579 GBP
NZ Jewellers£1,225 GBP

15 data points across 8 retailers

7 retailers£354 GBP to £1,225 GBP

B+
Cheapest Retailer
-
£354 GBP
Retailer 2
-
£381 GBP
View
Price last confirmed 9 days ago
B+
Retailer 3
-
£381 GBP
View
B
Retailer 4
-
£409 GBP
View
B
Retailer 5
-
£536 GBP
View
B
Retailer 6
-
£579 GBP
View
Most Expensive
C
NZ Jewellers
3d12d1de-3162-4edd-8e8f-d8dc419d9c87 · Nov 4
£1,225 GBP
$1,640 USD
View
6 more retailers have this diamond
Prices start from £354 GBPSave up to £871 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+
0.66ct Round
£354 GBP