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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6243098119

Certificate GIA 6243098119

Diamond specifications and retailer prices

From £572 GBP
$767 USD
As of October 31, 2026
Save £360 GBP (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £932 GBP at Frank Darling · As of November 2, 2026
View at Frank Darling

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 6243098119. Listed at 12 retailers as of October 31, 2026, with prices from £572 to £932, a £360 spread on the same certified stone. Frank Darling lists it at £932. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6243098119
Dimensions5.53 × 5.56 × 3.48 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.53 mm5.56 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6243098119
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 31
Current: £932 GBP|Low: £572 GBP|High: £932 GBP|Avg: £725 GBP
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£572 GBP
Retailer 11£619 GBP
Retailer 9£623 GBP
Retailer 6£636 GBP
Retailer 2£693 GBP
Retailer 4£718 GBP
Retailer 8£718 GBP
Retailer 10£814 GBP
Retailer 5£833 GBP
Retailer 7£922 GBP
Frank Darling£932 GBP

17 data points across 11 retailers

12 retailers£572 GBP to £932 GBP

A
Cheapest Retailer
-
£572 GBP
$767 USD
A
Retailer 2
-
£599 GBP
SGD 1,086 SGD
View
A
Retailer 3
-
£619 GBP
$830 USD
View
A
Retailer 4
-
£623 GBP
SGD 1,130 SGD
View
B+
Retailer 5
-
£636 GBP
$853 USD
View
B+
Retailer 6
-
£693 GBP
View
B+
Retailer 7
-
£718 GBP
$964 USD
View
B+
Retailer 8
-
£718 GBP
$964 USD
View
B+
Retailer 9
-
£814 GBP
View
B+
Retailer 10
-
£833 GBP
€1,064 EUR
View
Retailer 11
-
£922 GBP
$1,237 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Frank Darling
2706048HK · Nov 2
£932 GBP
$1,250 USD
View
11 more retailers have this diamond
Prices start from £572 GBPSave up to £360 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
£572 GBP