CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6501281572

Certificate GIA 6501281572

Diamond specifications and retailer prices

From £391 GBP
HK$4,100 HKD
As of November 1, 2026
Save £1,050 GBP (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,441 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6501281572. Listed at 14 retailers as of October 30, 2026, with prices from £391 to £1,441, a £1,050 spread on the same certified stone. NZ Jewellers lists it at £1,441. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.66
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6501281572
Dimensions5.58 × 5.56 × 3.46 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.58 mm5.56 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6501281572
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

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: Nov 1
Current: £1,441 GBP|Low: £391 GBP|High: £1,441 GBP|Avg: £635 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 4£391 GBP
Retailer 11£424 GBP
Retailer 10£466 GBP
Retailer 12£495 GBP
Retailer 15£495 GBP
Retailer 6£507 GBP
Retailer 3£531 GBP
Retailer 14£531 GBP
Retailer 2£562 GBP
Retailer 5£576 GBP
Retailer 8£616 GBP
Retailer 13£661 GBP
Retailer 7£669 GBP
Retailer 9£1,062 GBP
NZ Jewellers£1,441 GBP

40 data points across 15 retailers

14 retailers£391 GBP to £1,441 GBP

A
Cheapest Retailer
-
£391 GBP
HK$4,100 HKD
A
Retailer 2
-
£424 GBP
$569 USD
View
Final sale: no returns
Retailer 3
-
£460 GBP
$617 USD
View
Price last confirmed 49 days ago
A
Retailer 4
-
£466 GBP
$625 USD
View
A
Retailer 5
-
£482 GBP
SGD 874 SGD
View
A
Retailer 6
-
£495 GBP
$664 USD
View
A
Retailer 7
-
£495 GBP
$664 USD
View
A
Retailer 8
-
£531 GBP
$712 USD
View
A
Retailer 9
-
£531 GBP
$712 USD
View
A
Retailer 10
-
£562 GBP
View
A
Retailer 11
-
£616 GBP
€787 EUR
View
B+
Retailer 12
-
£661 GBP
$887 USD
View
B
Retailer 13
-
£1,062 GBP
View
Most Expensive
B
NZ Jewellers
108d9daa-d786-4562-9ea8-ae75631ea637 · Oct 30
£1,441 GBP
$1,934 USD
View
13 more retailers have this diamond
Prices start from £391 GBPSave up to £1,050 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
0.66ct Round
£391 GBP